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Автор - helpplis25

Определите общее сопротивление и силу тока в цепи ( с дано )

Ответ

Автор - Reideen

Дано:

R1=5Ом

R2=8Ом

R3=7Ом

U=20В

Найти:

Rобщее-?

I-?

Решение:

1)

Rобщее=R1+R2+R3

Rобщее=5Ом+8Ом+7Ом=20Ом

2)

I=U/R

I=20В/20Ом=1А

Ответ: Rобщее=20Ом; I=1A

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