R23=12 Om, R423=12*6/(12+6)=4 Om,
R=6+4=10 Om, I=3/10=0.3A =I1, U423= 3-0.3*6= 1.2B, I4=1.2/6=0.2A, I2=I3=1.2/12=0.1A
R23=12 Om, R423=12*6/(12+6)=4 Om,
R=6+4=10 Om, I=3/10=0.3A =I1, U423= 3-0.3*6= 1.2B, I4=1.2/6=0.2A, I2=I3=1.2/12=0.1A