题目内容
如图所示的电场中有A、B两点,下列判断正确的是( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250015283403404.jpg)
A.电势
,场强![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001528371533.png)
B.电势
,场强![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001528371533.png)
C.将电荷量为q的正电荷从A点移到B点,电场力做正功,电势能减少
D.将电荷量为q的负电荷从A点移到B点,电场力做正功,电势能减少
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250015283403404.jpg)
A.电势
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001528355528.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001528371533.png)
B.电势
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001528355528.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001528371533.png)
C.将电荷量为q的正电荷从A点移到B点,电场力做正功,电势能减少
D.将电荷量为q的负电荷从A点移到B点,电场力做正功,电势能减少
BC
试题分析:疏密表示电场的强弱,故场强
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001528418516.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001528355528.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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