使用基尔霍夫定律更简单:
I2 = I1 + 2A
I4 = I3 + 2A
I1×10Ω + I2×30Ω = I4×10Ω + I3×30Ω = 4V
可以解得:
I1 = -1.4A,I2 = 0.6A
I3 = -0.4A,I4 = 1.6A
如果使用叠加定理的话:
电流源相当于开路。则:
I1' = I2' = 4V/(10+30)Ω = 0.1A,I3' = I4' = 4V/(10+30)Ω = 0.1A
电压源相当于短路,则:
I2“ = -I3” = 0.5A,I4" = -I1" = 1.5A
所以:
I1 = I1' + I1" = 0.1A - 1.5A = -1.4A
I2 = I2‘ + I2" = 0.1A + 0.5A = 0.6A
I3 = I3' + I3" = 0.1A - 0.5A = -0.4A
I4 = I4' + I4" = 0.1A + 1.5A = 1.6A