再论电阻与横截面积成反比

本文主要从理论上论证了当导线中有电流通过时,导线内各处自由电子数密度都是相等的,与导线粗细无关,因而不存在细的地方出现电子的“拥挤”现象。

Rediscussing Resistance Is Inversely Propoctional to the Area of Transverst Section

This art cle lays stress on dealing with and proving theoretically thatwhen a steady and constant current passes through a conducting wire, thenumker density of free electrons in everywhere are equal to each other inthe wire. It has nothing to do with the degree of thickness of the wire,and there is no crowded electrons in the thin part of the wire.