先将R4两端断开,电流源开路,电压源短路,求出R4两端的等效电阻Req=R1//R2+R3=1.2+2=3.2Ω
然后求两端的等效电压,R4断开,最右边用KVL求出两端电压U=(Us1-Us2)*R2/(R1+R2)+Us2=13.2V
Ueq=13.2+Is*R3=33.2V
I=Ueq/(Req+R4)=6.15A
先将R4两端断开,电流源开路,电压源短路,求出R4两端的等效电阻Req=R1//R2+R3=1.2+2=3.2Ω
然后求两端的等效电压,R4断开,最右边用KVL求出两端电压U=(Us1-Us2)*R2/(R1+R2)+Us2=13.2V
Ueq=13.2+Is*R3=33.2V
I=Ueq/(Req+R4)=6.15A