一静电场沿x坐标轴方向的电势分布如图所示,则(  )A.在x1~x??2之

一静电场沿x坐标轴方向的电势分布如图所示,则(  )

A.在x1~x??2之间存在着沿x轴正方向的匀强电场

B.在x1~x??2之间存在着沿x轴正方向逐渐增强的电场

C.在x1~x??2之间沿x轴方向电场强度为零

D.在x1~x??2之间存在着沿x轴负方向的匀强电场

答案

D

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