关于电力线的一点讨论

SOME ARGUMENTATION ON POWER LINE

静电场的电力线在无电荷的地方不会相交，这是电力线的基本性质之一，一般的证明方法不能说明电力线不能相切的问题。本文借助于平面静电场的复势的方法讨论了这一问题，证明任意静电场电力线的不相交，也不相切。

The power line in static electric field will not intersect at place where there is no charge. The familiar methods cannot explain the question that power line can not be tangencial. This Paper discuses the question with complex Potential and Proves that power line in static electric field cannot intersect and is not tangencial.