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Porque ao alimentar uma bobina/indutor ele não fecha curto? É uma pergunta que intriga muita gente. O indutor funciona com base nas leis de faraday e ampere. Quando uma corrente circula por um condutor, pela lei de ampere, ela gera um campo magnetico no espaço em volta do fio. Em um indutor, o formato de espiras faz com que este campo magnetico se junte e fique mais forte. #engenhariaeletrica #fontechaveada #capacitor #EletronicaAplicada #componenteseletronicos
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Esses cálculos são válidos para o circuito em série, em que a corrente é igual em todos os elementos. Como aqui só ligamos 1 led e sabemos que a corrente do LED é 20mA, fica fácil calcular. Nesta caso o resistor precisa consumir 9V. E para saber qual o valor dele, basta dividir os 9V pela corrente do LED. A corrente do resistor também será 20mA, já que ele está em série com o LED. Lembrando que cada LED possui suas próprias características de tensão e corrente. Link do curso na bio do perfil
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