en gros
Мудрец
(11832)
18 часов назад
R5,6=R5*R6/(R5+R6)=4
R4,5,6=R4+R5,6=24
R7,8=R7+R8=12
G3...8=G3+G4,5,6+G7,8
1/R3...8=1/R3 + 1/R4,5,6 + 1/R7,8=4/24=1/6
R3...8=1/G3...8=6
Rобщ=R=R1+R2+R3...8=15
I=I1=I2=I3...8=U/R=12
U3...8=I3...8*R3...8=12*6=72
I3=U3...8/R3=3
I4=I5,6=U3...8/R4,5,6=3
U5,6=I5,6*R5,6=I4*R5,6=12
I5=U5,6/R5=0,6
I6=U5,6/R6=2,4
I7=I8=U3...8/R7,8=6
Баланс мощностей:
U*I=I1^2*R1+I2^2*R2+I3^2*R3+R4^2*R4+I5^2*R5+I6^2*R6+I7^2*R7+I8^2*R8
2160=2160
Итак,
I1=12
I2=12
I3=3
I4=3
I5=0,6
I6=2,4
I7=6
I8=6