Question

如图1所示，Q是带正电的点电荷，P1和P2为其电场中的两点．若E1、E2为P1、P2两点的电场强度的大小，φ1、

如图1所示，Q是带正电的点电荷，P1和P2为其电场中的两点．若E1、E2为P1、P2两点的电场强度的大小，φ1、φ2

φ1<φ2, 为什么?
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Answer 1

因为Q是带正电的点电荷，所以电场方向应该是以Q点为中心向四周扩散，又因为电场强度是密大疏小，所以E1>E2，又因为电势是沿电场线方向逐渐降低，所以φ1>φ2.
你的答案好像是错了，你自己再看看吧，我这也是我自己想的，也不一定是对的。

Answer 2

被采纳的答案是对的
Q是带正电的点电荷，电场线从Q出发到无穷远终止．顺着电场线电势降低
电场线方向由P1指向P2，顺着电场线电势降低

Answer 3

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Answer 4

电势沿电场线方向降低。

Answer 5

我怎么看着是反过来。。。