Question

ПОМОГИТЕ срочно нужно умоляю

Answer 1

U=30 B    R1=60 Ом   R2=120 Ом    R3=40 Ом   R4=20 Ом
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R34=R3+R4=40+20=60 Ом
R234=R34*R2/(R34+R2)=60*120/(60+120)=40 Ом
Ro=R1+R234=60+40=100 Ом
Io=I1=U/Ro=30/100=0.3 A
U2=Io*R234=0.3*40=12 B
I2=U2/R2=12/120=0.1 A
I3=I4=Io-I2=0.3-0.2=0.2 A
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