Предмет: Физика, автор: smerdeva

Напряжение на спирали лампочки от карманного фонаря равно 3,5В, сопротивление спирали 14Ом. Какую работу совершает ток в лампочек за 5 мин ?

Ответы

Автор ответа: nastya199912
1
сила тока 3.5/14=0.25 А
5 мин=300 сек
работа тока: 0.25*0.25*14*300=262.5 Дж.

smerdeva: А по какой формуле?
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