№1
I1=110/2=55А
I2=110/3=36A
I3=110A
№2
I1=110/1=110A
I2=110/2=55A
I3=110/4=27,5А
U=U2=110В
№3
U2=4*2=8В
I4=8/1=8A
I34=2+8=10A
I=I1=I2, тогда: I12=I34
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№1
I1=110/2=55А
I2=110/3=36A
I3=110A
№2
I1=110/1=110A
I2=110/2=55A
I3=110/4=27,5А
U=U2=110В
№3
U2=4*2=8В
I4=8/1=8A
I34=2+8=10A
I=I1=I2, тогда: I12=I34