题目内容
(请给出正确答案)
[单选题]
图示电路中,已知:R1 = 50 W,R2 = R3 = 30 W,R4 = 60 W,US = 60 V,IS = 3 A。用 叠加原理求各未知支路电流分别是()。
A.I1 =-2.1 A I2 =0.9 A I3 =0.6 A I4 =0.3 A
B.I1 = 2.1 A I2 =-0.9 A I3 =-0.6 A I4 =-0.3 A
C.I1 = 2.1 A I2 =0.9 A I3 =0.6 A I4 =-0.3 A
D.I1 = -2.1 A I2 =0.9 A I3 =0.6 A I4 =-0.3 A
E.I1 = 2.1 A I2 =0.9 A I3 =-0.6 A I4 =0.3 A
提问人:网友software_jsj
发布时间:2022-01-06