Предмет: Физика, автор: gargamelahloia

як вплине вкорочення спіралі електроплитки під час ремонту на потужність електричного струму,що споживає ця спіраль?​

Ответы

Автор ответа: slganiev
0

Відповідь:

Пояснення:

Потужність електроприладу можна вирахувати за формулою:

Р=I²*R     якщо спіраль вкоротили, то опір нової спіралі став менший, тоді   треба визначитися, а що стало зі струмом.

 Виристовуємо формулу закона Ома      I-U/R    якщо  опір став менший, а напруга стала, то сила струму збільшиться.

А ми маємо в формулі потужності I² тому і потужність при вкороченні спіралі стане більше.Відповідь: потужність зростає.

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