题目内容
、矩形线圈在匀强磁场中匀速转动产生的电动势e-t图像如图4,则 ( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082412385034413153.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082412385034413153.png)
A.此电动势的峰值是50V |
B.此交流电的周期为0.08s |
C.此交流电电压的有效值是50V |
D.此线圈转动产生的电动势瞬时值表达式为![]() |
AB
本题考查交变电流。由图知电动势峰值为50V,A对;周期为0.08s,B对;电压有效值
,C错;
,此线圈转动产生的电动势瞬时值表达式为
,D错;选AB。
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824123850375935.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824123850453995.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824123850484725.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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