题目内容
某电场中的电场线(方向未标出)如图1所示,现将一带负电的点电荷从A点移
至B点需克服电场力做功,则C、D两点的电场强度、电势大小关系应为( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241435539603638.png)
A.EC>ED,φC>φD
B.EC<ED,φC>φD
C.EC>ED,φC<φD
D.EC<ED,φC<φD
至B点需克服电场力做功,则C、D两点的电场强度、电势大小关系应为( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241435539603638.png)
A.EC>ED,φC>φD
B.EC<ED,φC>φD
C.EC>ED,φC<φD
D.EC<ED,φC<φD
A
电场线疏密程度表示场强大小,沿着电场线电势降低,A对;
![](http://thumb2018.1010pic.com/images/loading.gif)
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