Предмет: Физика, автор: taelesnopka

сопративление нагревательного элемента электрической плитки включенной в сеть напряжением U=220В, R=72.0Ом. какое количество электрической энергии потребит плитка в течении промежутка времени t=15.мин?

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Автор ответа: IamJustNoName

Выучи закон Джоуля-Ленца : Q=I²Rt и Закон Ома для участка цепи I=U/R.
Q=I²Rt=UIt=U²t/R
Q=U²t/R=220²×900/72=605 кДж

Автор ответа: lumiya1234

Овлврвруьвгвсшаьпьпплпщщууривтагальако

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