问题详情
图示电路中,已知:Us=1V,Is=1A,R1=R2=R3=1Ω,支路电流I1、I2分别是: A.-2A,-1A B.-1A,-2A C.1A,2A D.-1A,0A
请帮忙给出正确答案和分析,谢谢!