题目内容
空间有一沿x轴对称分布的电场,其电场强度E随x变化的图象如图所示.下列说法中正确的是( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408242219058306731.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408242219058306731.png)
A.O点的电势最低 | B.x2点的电势最高 |
C.x1和-x1两点的电势相等 | D.x1和x3两点的电势相等 |
C
试题分析:由题中图象知,
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824221906906266.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824221908326266.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824221906906266.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824221906906266.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824221906906266.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824221912990300.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824221914301331.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824221915346331.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824221906906266.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824221908326266.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824221914301331.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824221912990300.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824221915346331.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824221906906266.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824221923910315.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824221912990300.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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题目内容
A.O点的电势最低 | B.x2点的电势最高 |
C.x1和-x1两点的电势相等 | D.x1和x3两点的电势相等 |