图示电路中,换路前UC(0-)=0.2Ui,UR(0-)=0,电路换路UC(0+)后和UR(0+)分别为:

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问题 图示电路中,换路前UC(0-)=0.2Ui,UR(0-)=0,电路换路UC(0+)后和UR(0+)分别为:

选项 A、UC(0+)=0.2Ui,UR(0+)=0
B、UC(0+)=0.2Ui,UR(0+)=0.2Ui
C、UC(0-)=0.2Ui,UR(0+)=0.8Ui
D、UC(0+)=0.2U1,UR(0+)=Ui

答案C

解析 根据换路定则:UC(0+)=UC(0+)=0.2Ui,URC(0+)=Ui-UC(0+)=0.8Ui
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