题目内容
如图2是某正弦式交变电流的电流随时间变化的图象.根据图象可知,该交流电的( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241331330152629.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241331330152629.png)
A.周期为1.0×10-2 s |
B.周期为2.5×10-2 s |
C.电流的有效值为1.0 A |
D.电流的最大值为1.0 A |
D
由图像可知周期为2.0×10-2 s,峰值为1A,有效值为![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824133133047514.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824133133047514.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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题目内容
A.周期为1.0×10-2 s |
B.周期为2.5×10-2 s |
C.电流的有效值为1.0 A |
D.电流的最大值为1.0 A |