Question

Физика, 8 класс. Туплю очень, помогите.

Answer 1

R23=R2*R3/(R2+R3)=4*8/(4+8)=2.67 Ом

Ro=R1+R23=2+2.67=4.67 Ом

I1=Uo/Ro=12/4.67=2.57 A

U1=I1*R1=2.57*2=5 B

U2=U3=Uo-U1=12-5=7 B

I2=U2/R2=7/4=1.75 A

I3=I1-I2=2.57-1.75=0.82 A

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