Question

如下图所示,已知I1=2A,I2=1A,R1=R2=10欧,求各理想电流源的端电压和各电阻上消耗的功率

Answer 1

I3=I1-I2

=2-1

=1(A)

U1=R1*I3

=10*1

=10(V)

U3=U1-U2

=10-R2*I2

=10-10*1

=0(V)

R1消耗功率P1：

P1=I3*U1

=1*10

=10(W)

R2消耗功率P2：

P2=I2*U2

=1*10

=10(W)

答：I1电流源上电压等于10V,I2电流源上电压等于0V,电阻R1上消耗功率10 W,电阻R2上消耗功率10 W .