在如下图所示电路中,利用戴维南定理求解流过R3的电流i3【图片】
A.
i3 = uoc/(R 3+Req)= = (us1R2 +us2R1)/( R1+ R2)*( R1+ R2 +R3)
B.
uoc= (us1R2 +us2R1)/(R1+R2) Req = R1//R2=R1R2/(R1+R2)
C.
uoc= (us1R2 +us2R1)/(R1+R2) Req = R1+R2
D.
i3 = uoc/(R 3+Req)= = (us1R2 +us2R1)/( R1R2+ R2R3 +R1R3)