Предмет: Физика, автор: jokerstar2020

Определите силу тока в каждом резисторе, используя данные рисунка.

Приложения:

Ответы

Автор ответа: zinovicgrigorij
1

Ответ: 1,2А; 0,8А

Объяснение:

Параллельное соединение. Напряжение на резисторах будет одинаковое, а силу тока найдем по закону Ома.

1) находим эквивалентное сопротивление резисторов:

Rэкв=R1*R2/(R1+R2)=4*6/(4+6)=2,4 Ом.

2) Находим напряжение в цепи:

U=I*Rэкв=2*2,4=4,8В

3) Находим силу тока на R1: I1=U/R1=4,8/4=1,2А

4) Находим силу тока на R2: I2=U/R2=4,8/6=0,8А

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