U=12 B
R1=4 R2=3 R3=2 R4=5 R5=1.5 R6=4
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R23=R2+R3=3+2=5
R234=R23*R4/(R23+R4)=5/2=2.5
R2345=R234+R5=2.5+1.5=4
R23456=R2345*R6/(R2345+R6)=4/2=2
Ro=R1+R23456=4+2=6 Ом
I1=U/Ro=12/6=2 A
U23456=I1*R23456=2*2=4 B
I6=U23456/R6=4/4=1 A
I5=I1-I6=2-1=1 A
U23=I5*R234=1*2.5=2.5 B
I2=I3=U23/R23=2.5/5=0.5 A
I4=I5-I2=1-0.5=0.5 A
Смотри схему
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