题目内容
如图所示,A、B、C是平行纸面的匀强电场中的三点,它们之间的距离均为L,电量为q=1.0×10-5 C的负电荷由A移动到C电场力做功W1=4.0×10-5J,该电荷由C移动到B电场力做功W2=-2.0×10-5J,若B点电势为零,以下说法正确的是
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250040275331602.jpg)
A.A点电势为2V
B.A点电势为-2V
C.匀强电场的方向为由C指向A
D.匀强电场的方向为垂直于AC指向B
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250040275331602.jpg)
A.A点电势为2V
B.A点电势为-2V
C.匀强电场的方向为由C指向A
D.匀强电场的方向为垂直于AC指向B
BC
试题分析:由
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004027549719.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250040275651690.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004027580637.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004027596571.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004027611727.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250040276271316.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004027643636.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004027658563.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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