U1=2*R1=3*2=6B U1=U2,3=i2,3*(R2+R3) i2,3=6\6=1A i1,2,3=i1+12,3=1+2=3A U1,2,3=U1=6B i1,2,3=i1,2,3=3A R4,5=R4*R5\(R4+R5)=5 U4,5=i4,5*R4,5=3*5=15B U=U1,2,3+U4,5=6+15=21B ответ: 21В
U1=2*R1=3*2=6B
U1=U2,3=i2,3*(R2+R3)
i2,3=6\6=1A
i1,2,3=i1+12,3=1+2=3A
U1,2,3=U1=6B
i1,2,3=i1,2,3=3A
R4,5=R4*R5\(R4+R5)=5
U4,5=i4,5*R4,5=3*5=15B
U=U1,2,3+U4,5=6+15=21B
ответ: 21В
U1=2*R1=3*2=6B
U1=U2,3=i2,3*(R2+R3)
i2,3=6\6=1A
i1,2,3=i1+12,3=1+2=3A
U1,2,3=U1=6B
i1,2,3=i1,2,3=3A
R4,5=R4*R5\(R4+R5)=5
U4,5=i4,5*R4,5=3*5=15B
U=U1,2,3+U4,5=6+15=21B
ответ: 21В