图中虚线1、2、3、4表示匀强电场的等势面．一带正电的粒子只在电场力的作用下从a点运动到b点，轨迹如图中实线所示．下列说法中正确的是_刷题宝

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图中虚线1、2、3、4表示匀强电场的等势面．一带正电的粒子只在电场力的作用下从a点运动到b点，轨迹如图中实线所示．下列说法中正确的是（）

A：等势面1电势最低

B：粒子从a运动到b，动能减小

C：粒子从a运动到b，电势能减小

D：粒子从a运动到b的过程中电势能与动能之和不变

上一题下一题 0.0难度选择题更新时间:2014-12-12 02:09:38

答案(点此获取答案解析）

C,D

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