题目内容
如图是一正弦式交变电流的电压图象.从图象可知电压的最大值和频率分别为( )![](http://thumb.1010pic.com/pic2/upload/papers/20140610/201406102234250142374.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140610/201406102234250142374.png)
A.10V,0.02s | B.10V,50Hz | ||||
C.10
| D.10
|
根据图象可知该交流电的电压最大值是Um=10V,
周期T=0.02s,所以频率为50Hz,故B正确
故选:B.
周期T=0.02s,所以频率为50Hz,故B正确
故选:B.
![](http://thumb2018.1010pic.com/images/loading.gif)
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