{"id":3781,"date":"2018-02-15T10:05:39","date_gmt":"2018-02-15T10:05:39","guid":{"rendered":"http:\/\/fisicaevestibular.com.br\/novo\/?page_id=3781"},"modified":"2024-06-26T15:57:32","modified_gmt":"2024-06-26T15:57:32","slug":"eletrodinamica-corrente-eletrica-energia-eletrica-potencia-eletrica","status":"publish","type":"page","link":"https:\/\/fisicaevestibular.com.br\/novo\/enem\/eletrodinamica-corrente-eletrica-energia-eletrica-potencia-eletrica\/","title":{"rendered":"Eletrodin\u00e2mica &#8211; Corrente el\u00e9trica \u2013 Energia el\u00e9trica \u2013 Pot\u00eancia el\u00e9trica"},"content":{"rendered":"<p align=\"CENTER\"><span style=\"color: #0000cc;\"><span style=\"font-family: Arial\\ Black, serif;\"><span style=\"font-size: large;\"><b>Eletrodin\u00e2mica<\/b><\/span><\/span><\/span><\/p>\n<p align=\"CENTER\"><span style=\"color: #c00000;\"><span style=\"font-family: Arial\\ Black, serif;\"><span style=\"font-size: large;\"><b>Corrente el\u00e9trica \u2013 Energia el\u00e9trica \u2013 Pot\u00eancia el\u00e9trica<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\">\u00a0<\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial\\ Black, serif;\"><span style=\"font-size: large;\"><b>01-(ENEM-MEC)<\/b><\/span><\/span><\/span><\/p>\n<p><img decoding=\"async\" class=\"alignnone\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_cbf6dbbf.jpg\" alt=\"Eletrodin\u00e2mica\" width=\"205\" height=\"120\" name=\"Imagem 1\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>Um\u00a0 curioso estudante, empolgado com a aula de circuito\u00a0 el\u00e9trico que assistiu na escola, resolve desmontar sua lanterna. Utilizando-se da l\u00e2mpada e da pilha, retiradas do equipamento, e de um fio com as extremidades descascadas, faz as seguintes liga\u00e7\u00f5es com a inten\u00e7\u00e3o de acender a l\u00e2mpada;<\/b><\/span><\/span><\/span><\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_fa65fa03.jpg\" alt=\"\" width=\"780\" height=\"377\" name=\"Imagem 2\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>Tendo por base os esquemas mostrados, em quais casos a l\u00e2mpada ascendeu?<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>A. (1), (3), (6)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>B. (3), (4), (5)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>C. (1), (3), (5)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>D. (1), (3), (7)\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>E. (1), (2), (5)<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\">\u00a0<\/span><\/p>\n<p><span style=\"color: #0000cc;\">\u00a0<span style=\"font-family: Arial\\ Black, serif;\"><span style=\"font-size: large;\"><b>02-(ENEM-MEC)<\/b><\/span><\/span><\/span><\/p>\n<p><img decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_c61a252c.jpg\" alt=\"\" width=\"234\" height=\"132\" name=\"Imagem 3\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>A distribui\u00e7\u00e3o m\u00e9dia, por tipo de equipamento, do consumo de energia el\u00e9trica nas resid\u00eancias no Brasil \u00e9 apresentada no gr\u00e1fico.<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_124a8a21.jpg\" alt=\"\" width=\"776\" height=\"246\" name=\"Imagem 4\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>Em associa\u00e7\u00e3o com os dados do gr\u00e1fico, considere as vari\u00e1veis:<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>I. Pot\u00eancia do equipamento.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>II. Horas de funcionamento.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>III. N\u00famero de equipamentos.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>O valor das fra\u00e7\u00f5es percentuais do consumo de energia depende de<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_ef650a97.png\" alt=\"\" width=\"767\" height=\"24\" name=\"Imagem 44\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial\\ Black, serif;\"><span style=\"font-size: large;\"><b>03-(ENEM-MEC)<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_65ed086a.jpg\" alt=\"\" width=\"238\" height=\"133\" name=\"Imagem 5\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>Entre as in\u00fameras recomenda\u00e7\u00f5es dadas para a economia de energia el\u00e9trica em uma resid\u00eancia, destacamos as seguintes:<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>&#8211; Substitua l\u00e2mpadas incandescentes por fluorescentes compactas.- Evite usar o chuveiro el\u00e9trico com a chave na posi\u00e7\u00e3o &#8220;inverno&#8221; ou &#8220;quente&#8221;.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>&#8211; Acumule uma quantidade de roupa para ser passada a ferro el\u00e9trico de uma s\u00f3 vez.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>&#8211; Evite o uso de tomadas m\u00faltiplas para ligar v\u00e1rios aparelhos simultaneamente.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>&#8211; Utilize, na instala\u00e7\u00e3o el\u00e9trica, fios de di\u00e2metros recomendados \u00e0s suas finalidades.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>A caracter\u00edstica comum a todas essas recomenda\u00e7\u00f5es \u00e9 a proposta de economizar energia atrav\u00e9s da tentativa de, no dia-a-dia, reduzir<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>a) a pot\u00eancia dos aparelhos e dispositivos el\u00e9tricos.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>b) o tempo de utiliza\u00e7\u00e3o dos aparelhos e dispositivos.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>c) o consumo de energia el\u00e9trica convertida em energia t\u00e9rmica.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>d) o consumo de energia t\u00e9rmica convertida em energia el\u00e9trica.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>e) o consumo de energia el\u00e9trica atrav\u00e9s de correntes de fuga.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial\\ Black, serif;\"><span style=\"font-size: large;\"><b>04-(ENEM-MEC)<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_86163228.jpg\" alt=\"\" width=\"244\" height=\"137\" name=\"Imagem 6\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\">\u00a0<span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>&#8220;&#8230;O Brasil tem potencial para produzir pelo menos 15 mil megawatts por hora de energia a partir de fontes alternativas\u201d.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>Somente nos Estados da regi\u00e3o Sul, o potencial de gera\u00e7\u00e3o de energia por interm\u00e9dio das sobras agr\u00edcolas e florestais \u00e9 de 5.000 megawatts por hora.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>Para se ter uma id\u00e9ia do que isso representa, a usina hidrel\u00e9trica de Ita, uma das maiores do pa\u00eds, na divisa entre o Rio Grande do Sul e Santa Catarina, gera 1.450 megawatts de energia por hora.&#8221;<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_f225beed.jpg\" alt=\"\" width=\"778\" height=\"193\" name=\"Imagem 7\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>Esse texto, transcrito de um jornal de grande circula\u00e7\u00e3o, cont\u00e9m, pelo menos, UM ERRO CONCEITUAL ao apresentar valores de produ\u00e7\u00e3o e de potencial de gera\u00e7\u00e3o de energia. Esse erro consiste em<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>a) apresentar valores muito altos para a grandeza energia.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>b) usar unidade megawatt para expressar os valores de pot\u00eancia.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>c) usar unidades el\u00e9tricas para biomassa.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>d) fazer uso da unidade incorreta megawatt por hora.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>e) apresentar valores num\u00e9ricos incompat\u00edveis com as unidades.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial\\ Black, serif;\"><span style=\"font-size: large;\"><b>05-(ENEM-MEC)<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_1022656f.jpg\" alt=\"\" width=\"275\" height=\"141\" name=\"Imagem 8\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>Observe a tabela seguinte. Ela traz especifica\u00e7\u00f5es t\u00e9cnicas constantes no manual de instru\u00e7\u00f5es fornecido<img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_8838a11b.jpg\" alt=\"\" width=\"778\" height=\"249\" name=\"Imagem 9\" align=\"BOTTOM\" border=\"0\" \/><\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>pelo fabricante de uma torneira el\u00e9trica. Considerando que o modelo de maior pot\u00eancia da vers\u00e3o 220 V da torneira suprema foi inadvertidamente conectada a uma rede com tens\u00e3o nominal de 127 V, e que o aparelho est\u00e1 configurado para trabalhar em sua m\u00e1xima pot\u00eancia. Qual o valor aproximado da pot\u00eancia ao ligar a torneira?<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_a30aa7b0.png\" alt=\"\" width=\"774\" height=\"26\" name=\"Imagem 45\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial\\ Black, serif;\"><span style=\"font-size: large;\"><b>06-(ENEM-MEC)<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_390b799d.jpg\" alt=\"\" width=\"296\" height=\"146\" name=\"Imagem 10\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>A energia el\u00e9trica consumida nas resid\u00eancias \u00e9 medida, em quilowatt-hora, por meio de um rel\u00f3gio medidor de consumo. Nesse rel\u00f3gio, da direita para esquerda, tem-se o ponteiro da unidade, da dezena, da centena e do milhar. Se um ponteiro estiver entre dois n\u00fameros, considera-se o \u00faltimo n\u00famero ultrapassado pelo ponteiro. Suponha que as medidas indicadas nos esquemas seguintes tenham sido feitas em uma cidade em que o pre\u00e7o do quilowatt-hora fosse de R$ 0,20.<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_f3c15883.jpg\" alt=\"\" width=\"782\" height=\"354\" name=\"Imagem 11\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>O valor a ser pago pelo consumo de energia el\u00e9trica registrado seria de<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_83fc513f.png\" alt=\"\" width=\"774\" height=\"20\" name=\"Imagem 46\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p align=\"CENTER\"><span style=\"color: #c00000;\"><span style=\"font-family: Arial\\ Black, serif;\"><span style=\"font-size: large;\"><b>Exerc\u00edcios com caracter\u00edsticas de ENEM<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\">\u00a0<\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial\\ Black, serif;\"><span style=\"font-size: large;\"><b>07<\/b><\/span><\/span><\/span><span style=\"color: #0000cc;\"><span style=\"font-family: Arial\\ Black, serif;\"><span style=\"font-size: large;\"><b>&#8211;<\/b><\/span><\/span><\/span><span style=\"color: #0000cc;\"><span style=\"font-family: Arial\\ Black, serif;\"><span style=\"font-size: large;\"><b>\u00a0(UFSM-RS)<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_f1cb0bb.jpg\" alt=\"\" width=\"706\" height=\"138\" name=\"Imagem 12\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>Uma das aplica\u00e7\u00f5es dos raios X \u00e9 na observa\u00e7\u00e3o dos ossos do corpo humano.<\/b><\/span><\/span><\/span><\/p>\n<p align=\"CENTER\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_a00cf7d7.jpg\" alt=\"\" width=\"333\" height=\"156\" name=\"Imagem 13\" align=\"BOTTOM\" border=\"0\" \/><span style=\"color: #0000cc;\"> <img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_ecaa752.jpg\" alt=\"\" width=\"337\" height=\"156\" name=\"Imagem 14\" align=\"BOTTOM\" border=\"0\" \/><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>Os raios X s\u00e3o obtidos quando el\u00e9trons emitidos por um filamento aquecido s\u00e3o acelerados por um campo el\u00e9trico e atingem um alvo met\u00e1lico com velocidade muito grande. Se 1,0.10<\/b><\/span><\/span><\/span><span style=\"color: #0000cc;\"><sup><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>18<\/b><\/span><\/span><\/sup><\/span><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>\u00a0el\u00e9trons (e=1,6.10<\/b><\/span><\/span><\/span><span style=\"color: #0000cc;\"><sup><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>-19<\/b><\/span><\/span><\/sup><\/span><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>C) atingem o alvo por segundo, a corrente el\u00e9trica no tubo, em A, \u00e9 de:<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_d1a89727.png\" alt=\"\" width=\"776\" height=\"17\" name=\"Imagem 47\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial\\ Black, serif;\"><span style=\"font-size: large;\"><b>08-(UNIFESP-SP)<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_cb08646a.jpg\" alt=\"\" width=\"761\" height=\"136\" name=\"Imagem 15\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>Num livro de eletricidade voc\u00ea encontra tr\u00eas informa\u00e7\u00f5es: a primeira afirma que isolantes s\u00e3o corpos que n\u00e3o permitem a passagem da corrente el\u00e9trica; a segunda afirma que o ar \u00e9 isolante e a terceira<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_ba3ca1ce.jpg\" alt=\"\" width=\"772\" height=\"244\" name=\"Imagem 16\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\">\u00a0<span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>afirma que, em m\u00e9dia, um raio se constitui de uma descarga el\u00e9trica correspondente a uma corrente de 10000 amp\u00e8res que atravessa o ar e desloca, da nuvem \u00e0 Terra, cerca de 20 coulombs. Pode-se concluir que essas tr\u00eas informa\u00e7\u00f5es s\u00e3o<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>a) coerentes, e que o intervalo de tempo m\u00e9dio de uma descarga el\u00e9trica \u00e9 de 0,002 .<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>b) coerentes, e que o intervalo de tempo m\u00e9dio de uma descarga el\u00e9trica \u00e9 de 2,0 s.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>c) conflitantes, e que o intervalo de tempo m\u00e9dio de uma descarga el\u00e9trica \u00e9 de 0,002 s.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>d) conflitantes, e que o intervalo de tempo m\u00e9dio de uma descarga el\u00e9trica \u00e9 de 2,0 s.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>e) conflitantes, e que n\u00e3o \u00e9 poss\u00edvel avaliar o intervalo de tempo m\u00e9dio de uma descarga el\u00e9trica.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>09-(FUVEST-SP)<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_f9b43354.jpg\" alt=\"\" width=\"776\" height=\"149\" name=\"Imagem 17\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>Medidas el\u00e9tricas indicam que a superf\u00edcie terrestre tem carga el\u00e9trica total negativa de, aproximadamente, 600.000 coulombs.<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_cbb67d6.jpg\" alt=\"\" width=\"780\" height=\"225\" name=\"Imagem 18\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>Em tempestades, raios de cargas positivas, embora raros, podem atingir a superf\u00edcie terrestre. A corrente el\u00e9trica desses raios pode atingir valores de at\u00e9 300.000A. Que fra\u00e7\u00e3o da carga el\u00e9trica da Terra poderia ser compensada por um raio de 300.000A e com dura\u00e7\u00e3o de 0,5s?<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_7ebc401e.png\" alt=\"\" width=\"774\" height=\"19\" name=\"Imagem 48\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial\\ Black, serif;\"><span style=\"font-size: large;\"><b>10-<\/b><\/span><\/span><\/span><span style=\"color: #0000cc;\"><span style=\"font-family: Arial\\ Black, serif;\"><span style=\"font-size: large;\"><b>(UPE-PE)<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_70989c43.jpg\" alt=\"\" width=\"639\" height=\"152\" name=\"Imagem 19\" align=\"BOTTOM\" border=\"0\" \/><span style=\"color: #0000cc;\">\u00a0<\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>A corrente de 0,3 A que atravessa o peito pode produzir fibrila\u00e7\u00e3o (contra\u00e7\u00f5es excessivamente <\/b><\/span><\/span><\/span><\/p>\n<p align=\"CENTER\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_2e3ca2d2.jpg\" alt=\"\" width=\"401\" height=\"241\" name=\"Imagem 20\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>r\u00e1pidas das\u00a0fibrilas musculares) no cora\u00e7\u00e3o de um ser humano, perturbando o ritmo dos batimentos card\u00edacos com efeitos possivelmente fatais. Considerando que a corrente dure 2,0 min, o n\u00famero de el\u00e9trons que atravessam o peito do ser humano vale\u00a0 &#8212;\u00a0 carga do el\u00e9tron= 1,6 x10<\/b><\/span><\/span><\/span><span style=\"color: #0000cc;\"><sup><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>-19<\/b><\/span><\/span><\/sup><\/span><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>C<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_f872dbf9.png\" alt=\"\" width=\"774\" height=\"23\" name=\"Imagem 49\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial\\ Black, serif;\"><span style=\"font-size: large;\"><b>11-(UFPE-PE)<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_44fd6e12.jpg\" alt=\"\" width=\"774\" height=\"142\" name=\"Imagem 21\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>O gr\u00e1fico mostra a varia\u00e7\u00e3o da corrente el\u00e9trica I, em amp\u00e8re, num fio em fun\u00e7\u00e3o do tempo t, em segundos.<\/b><\/span><\/span><\/span><\/p>\n<p align=\"CENTER\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_db7083dc.jpg\" alt=\"\" width=\"504\" height=\"208\" name=\"Imagem 22\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>Qual a carga el\u00e9trica, em coulomb, que passa por uma se\u00e7\u00e3o transversal do condutor nos primeiros 4,0 segundos?<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_4765b646.png\" alt=\"\" width=\"774\" height=\"20\" name=\"Imagem 50\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial\\ Black, serif;\"><span style=\"font-size: large;\"><b>12-(UECE-CE)<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_ec6435a9.jpg\" alt=\"\" width=\"778\" height=\"156\" name=\"Imagem 23\" align=\"BOTTOM\" border=\"0\" \/><span style=\"color: #0000cc;\">\u00a0\u00a0<\/span><\/p>\n<p><a name=\"_GoBack\"><\/a><span style=\"color: #0000cc;\">\u00a0<span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>Uma bateria de 12 V de tens\u00e3o e 60 A.h de carga alimenta um sistema de som, fornecendo a esse <\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_72ca703d.jpg\" alt=\"\" width=\"770\" height=\"237\" name=\"Imagem 24\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>sistema uma pot\u00eancia de 60 W. Considere que a bateria, no in\u00edcio, est\u00e1 plenamente carregada e alimentar\u00e1 apenas o sistema de som, de maneira que a tens\u00e3o da bateria permanecer\u00e1 12 V at\u00e9 consumir os 60 A.h de carga. O tempo M\u00e1ximo de funcionamento ininterrupto do sistema de som em horas \u00e9:<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_ebe11f6c.png\" alt=\"\" width=\"774\" height=\"20\" name=\"Imagem 51\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial\\ Black, serif;\"><span style=\"font-size: large;\"><b>13-(UFJF-MG)\u00a0<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_53664ec0.jpg\" alt=\"\" width=\"774\" height=\"149\" name=\"Imagem 25\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>O gr\u00e1fico mostra a pot\u00eancia el\u00e9trica, em kW, consumida na resid\u00eancia de um morador da cidade de Juiz de Fora, ao longo do dia. A resid\u00eancia \u00e9 alimentada com uma voltagem de 120 V. Essa resid\u00eancia <\/b><\/span><\/span><\/span><\/p>\n<p align=\"CENTER\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_136e9bc9.jpg\" alt=\"\" width=\"560\" height=\"249\" name=\"Imagem 26\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>tem um disjuntor que desarma,se a corrente el\u00e9trica ultrapassar um certo valor, para evitar danos na instala\u00e7\u00e3o el\u00e9trica. Por outro lado, esse disjuntor \u00e9 dimensionado para suportar uma corrente utilizada na opera\u00e7\u00e3o de todos os aparelhos da resid\u00eancia, que somam uma pot\u00eancia total de 7,20 kW.<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_f039c4a0.jpg\" alt=\"\" width=\"779\" height=\"248\" name=\"Imagem 27\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>O valor m\u00e1ximo de corrente que o disjuntor pode suportar, a energia em kWh consumida ao longo de um dia nessa resid\u00eancia e o pre\u00e7o a pagar por um m\u00eas de consumo, se o 1kWh custa R$ 0,50, s\u00e3o, respectivamente:<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>a) 20 A, 30kWh e R$360,00\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>b) 60 A, 24kWh e R$360,00\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>c) 24 A, 60kWh e R$240,00<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>d) 50 A, 12kWh e R$120,00\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>e) b) 60 A, 24kWh e R$240,00<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\">\u00a0<\/span><\/p>\n<p><span style=\"color: #0000cc;\">\u00a0<\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial\\ Black, serif;\"><span style=\"font-size: large;\"><b>14-(PUC-RJ)<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_f93dd90c.jpg\" alt=\"\" width=\"775\" height=\"157\" name=\"Imagem 28\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\">\u00a0<span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>Os chuveiros el\u00e9tricos de tr\u00eas temperaturas s\u00e3o muito utilizados no Brasil. Para instalarmos um chuveiro \u00e9 necess\u00e1rio escolher a pot\u00eancia do chuveiro e a tens\u00e3o que iremos utilizar na nossa instala\u00e7\u00e3o el\u00e9trica. <\/b><\/span><\/span><\/span><\/p>\n<p align=\"CENTER\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_727e27ac.jpg\" alt=\"\" width=\"346\" height=\"179\" name=\"Imagem 29\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>Desta\u00a0forma, se instalarmos um chuveiro de 4.500 W utilizando a tens\u00e3o de 220 V, n\u00f3s podemos utilizar um disjuntor que aguente a passagem de 21 A. Se quisermos ligar outro chuveiro de pot\u00eancia de 4.500 W em uma rede de tens\u00e3o de 110 V, qual dever\u00e1 ser o disjuntor escolhido?<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_9d6463df.png\" alt=\"\" width=\"774\" height=\"20\" name=\"Imagem 52\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial\\ Black, serif;\"><span style=\"font-size: large;\"><b>15- (UNIFOR-CE)\u00a0<\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_66ec3d33.jpg\" alt=\"\" width=\"779\" height=\"163\" name=\"Imagem 30\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>A nossa matriz energ\u00e9tica \u00e9 eminentemente de origem hidr\u00e1ulica. As nossas usinas, como Itaip\u00fa, Sobradinho, \u00a0Paulo Afonso e Tucuru\u00ed, est\u00e3o localizadas a grandes dist\u00e2ncias dos centros <\/b><\/span><\/span><\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/fisicaevestibular.com.br\/novo\/wp-content\/uploads\/migracao\/enem\/36\/ENEM36_html_7b5b9d86.jpg\" alt=\"\" width=\"779\" height=\"150\" name=\"Imagem 31\" align=\"BOTTOM\" border=\"0\" \/><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>consumidores de energia, fazendo necess\u00e1ria a transmiss\u00e3o de energia atrav\u00e9s de extensas linhas. A escolha por esse tipo de transmiss\u00e3o, em alta tens\u00e3o e corrente alternada de baixa intensidade, ocorre porque:<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>I. A transmiss\u00e3o de grande pot\u00eancia em baixa tens\u00e3o e corrente de baixa intensidade \u00e9 economicamente vi\u00e1vel.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>II. A transmiss\u00e3o em corrente de alta intensidade e baixa tens\u00e3o demandaria uma grande perda de pot\u00eancia devido ao aquecimento das linhas de transmiss\u00e3o.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>III. A transmiss\u00e3o em corrente alternada permite o abaixamento simplificado da tens\u00e3o atrav\u00e9s de transformadores nas esta\u00e7\u00f5es abaixadoras dos centros consumidores.<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>a) I, apenas.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>b) II, apenas.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>c) III, apenas.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>d) I e III, apenas.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n<p><span style=\"color: #0000cc;\"><span style=\"font-family: Arial, serif;\"><span style=\"font-size: medium;\"><b>e) II e III, apenas.<\/b><\/span><\/span><\/span><\/p>\n<p>&nbsp;<\/p>\n<h3><a title=\"Resolu\u00e7\u00e3o Comentada \u2013 Eletrodin\u00e2mica Corrente el\u00e9trica \u2013 Energia el\u00e9trica \u2013 Pot\u00eancia el\u00e9trica\" href=\"http:\/\/fisicaevestibular.com.br\/novo\/enem\/eletrodinamica-corrente-eletrica-energia-eletrica-potencia-eletrica\/resolucao-comentada-eletrodinamica-corrente-eletrica-energia-eletrica-potencia-eletrica\/\"><span style=\"color: #000080;\">Confira a resolu\u00e7\u00e3o comentada<\/span><\/a><\/h3>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/fisicaevestibular.com.br\/novo\/enem\/\">Clique aqui para ver sobre o tema!<\/a><\/p>\n<p><a href=\"https:\/\/www.youtube.com\/user\/fisicaevestibular\/playlists\">Confira as v\u00eddeo aulas!<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Eletrodin\u00e2mica Corrente el\u00e9trica \u2013 Energia el\u00e9trica \u2013 Pot\u00eancia el\u00e9trica \u00a0 01-(ENEM-MEC) Um\u00a0 curioso estudante, empolgado com a aula de circuito\u00a0 el\u00e9trico que assistiu na escola, resolve desmontar sua lanterna. Utilizando-se da l\u00e2mpada e da pilha, retiradas do equipamento, e de um fio com as extremidades descascadas, faz as seguintes liga\u00e7\u00f5es com a inten\u00e7\u00e3o de acender a l\u00e2mpada; Tendo por base<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":3575,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-3781","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/3781","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/comments?post=3781"}],"version-history":[{"count":4,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/3781\/revisions"}],"predecessor-version":[{"id":9834,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/3781\/revisions\/9834"}],"up":[{"embeddable":true,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/3575"}],"wp:attachment":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/media?parent=3781"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}