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（）。[img=205x156]1803da58c715bf1.png[/img] 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

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2022-06-11

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（）。[img=205x156]1803da58c715bf1.png[/img] 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

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（）。[img=205x156]1803da58c715bf1.png[/img]
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

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