题目内容

当一个带电导体达到静电平衡时（）

A. 表面上电荷密度较大处电势较高;
B. 导体内任一点与其表面上任一点电势差等于零
C. 导体内部的电势比导体表面的电势高
D. 表面曲率较大处电势较高

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