E=1.4 B r=0.3 Ом R1=0.9 Ом R2=R3=0.6 Ом R4=0.5 Ом
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R23=R2*R3/(R2+R3)=0.3
Ro=R1+R23+R4=0.9+0.3+0.5=1.7
Io=E/(Ro+r)=1.4/(1.7+0.3)=0.7 A
I1=I4=Io=0.7 A
I2=I3=Io/2=0.35 A
U1=Io*R1=0.7*0.9=0.63 B
U2=U3=Io*R23=0.7*0.3=0.21 B
U4=Io*R4=0.7*0.5=0.35 B
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