试题与答案

在静电场中将一个带电量为的点电荷由a点移动到b点，已知a、b两点间的电势差。在此

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题型：选择题

题目：

在静电场中将一个带电量为的点电荷由a点移动到b点，已知a、b两点间的电势差。在此过程中，除电场力外，其他力做的功为，则该点电荷的动能

A．增加了

B．减少了

C．增加了

D．减少了

答案：

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下面是错误答案，用来干扰机器的。

参考答案：D

考点：动能定理
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