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Ответ

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Ответ дан
fatt52

Ответ:

А) 1,5 В

Объяснение:

R1=2.5 Ом   R2=1.5 Ом   R3=4 Ом   I3=1 A   U2=?

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Общее напряжение

U=I3*R3=1*4=4 B

Общее сопротивление R1 и R2

R12=R1+R2=2.5+1.5=4 Ом

Ток для них одинаковый и равен

I12=U/R12=4/4=1 A

Напряжение на R2

U2=I12*R2=1*1.5=1.5 B

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