U=U1=U2=U3=3 B
R=1/R1 + 1/R2 + 1/R3= 1/2 + 1/6 + 1/3= 1 Ом
I1=U1:R1=3:2=1,5 A
I2=U2:R2=3:6=0,5 A
I3=U3:R3=3:3=1 A
I=I1+I2+I3=1,5+0,5+1=3 A
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U=U1=U2=U3=3 B
R=1/R1 + 1/R2 + 1/R3= 1/2 + 1/6 + 1/3= 1 Ом
I1=U1:R1=3:2=1,5 A
I2=U2:R2=3:6=0,5 A
I3=U3:R3=3:3=1 A
I=I1+I2+I3=1,5+0,5+1=3 A