I1=2A
Объяснение:
U1=I1*R1=2*7=14v
I1=I2+I3
R2;3=R1*R2/(R1+R2)=4*10/(4+10)=2.86 Om
U2=U3=I1*R2;3=2*2.86=5.71v
I2=U2/R2=5.71/4=1.43A
I3=5/71/10=0.57A
I1=2A
Объяснение:
U1=I1*R1=2*7=14v
I1=I2+I3
R2;3=R1*R2/(R1+R2)=4*10/(4+10)=2.86 Om
U2=U3=I1*R2;3=2*2.86=5.71v
I2=U2/R2=5.71/4=1.43A
I3=5/71/10=0.57A