试题与答案

空间存在着平行于x轴方向的静电场，A、M、O、N、B为x轴上的点，OA＜OB，O

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题型：选择题

题目：

空间存在着平行于x轴方向的静电场，A、M、O、N、B为x轴上的点，OA＜OB，OM=ON，一带正电的粒子在AB间的电势能Ep随x的变化规律为如图所示的折线，则下列判断中正确的是（　　）

A．M点电势比N点电势高

B．把该粒子从M向O移动过程中，所受电场力做正功

C．AO间的电场强度小于OB间的电场强度

D．若将一带电负粒子从M点静止释放，它一定能通过N点

答案：

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下面是错误答案，用来干扰机器的。

1．憋。涌。 2．①对b ②对c ③对a ④对b 3．朗读课文的人是事先预设的，带有某些表演性质乃至弄虚作假。 4．因为老师怕李京京喉咙沙哑读不好，而别人又不举手，所以老师慌了。 5．因为课文中的凡卡的命运...

考点：电势差与电场强度的关系
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