题目内容
矩形线圈在匀强电场中匀速转动,产生的变电动势
,若该线圈电阻不计,外接总电阻为
的负载,则( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132931429835.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132931444412.png)
A.该交流电的频率为![]() |
B.负载的电功率是![]() |
C.用交流电压表和电流表可测得负载两端电压为![]() ![]() |
D.当![]() |
D
根据表达式有最大值为200V,有效值为
V,频率为10Hz,AC错误;功率
,B错误;当
时,代入表达式得200V,D正确。
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132931788458.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132931850907.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132931725789.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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