题目内容
x轴上的两个点电荷
和
,
和
之间连线上各点电势高低如图曲线所示(AP>PB),选远穷处电势为零,从图中可以看出 ( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241215089943478.jpg)
A.
的电量一定大于
的电量
B.
和
一定是同种电荷
C.P点电场强度为零
D.
和
之间连线上各点电场方向都指向![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121508947221.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121508932219.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121508947221.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121508932219.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121508947221.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241215089943478.jpg)
A.
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121508932219.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121509010228.gif)
B.
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121508932219.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121508947221.gif)
C.P点电场强度为零
D.
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121508932219.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121508947221.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121508947221.gif)
AD
略
![](http://thumb2018.1010pic.com/images/loading.gif)
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