如图,理想变压器原线圈接在u=Umsin(t+φ)的交流电源上,副线圈接三个阻值相同的电阻R,不计电表内电阻影响。闭合开关S后( )
![](https://img.xkw.com/dksih/QBM/2021/3/18/2680538478346240/2681490833981440/STEM/8dcab634-f45c-425a-bd60-14df205fb964.png?resizew=331)
![](https://img.xkw.com/dksih/QBM/2021/3/18/2680538478346240/2681490833981440/STEM/8dcab634-f45c-425a-bd60-14df205fb964.png?resizew=331)
A.电流表A1的示数不变 |
B.电流表A2的示数不变 |
C.电压表V1的示数不变 |
D.电压表V2的示数不变 |
更新时间:2021-03-19 22:49:58
|
【知识点】 变压器两端电路的动态分析
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