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