Предмет: Физика, автор: slwxp

РЕШИТЕ ПЖ ЗАДАЧУ ,СРОЧНО !!

Мощность электрочайника 1550вт. Какой силы ток протекает через чайник при напряжении 220вт? Какую работу совершает ток в такой чайнике за 5 мин.

можно пожалуйста подробное решение ​

Ответы

Автор ответа: jennybe1312
1

Ответ:

P = 1550

U = 220

P =U×I

I = P/U = 1550/220 = приблизительно 7 ампер

A - работа тока.

А = P×t = 1550 × 300 = 465000 Дж = 465кДж


jennybe1312: а , забыл написать : 5 минут - это 300 секунд.
jennybe1312: а то вдруг нп понятно откуда эта цифра взялась
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