稳恒电流电路中的电荷分布

在稳恒电流电路中,那种认为无论是导线还是负载,仍然处处保持其原来的电中性的看法是不正确的。无论是导线还是负载,其上各段都有电荷的积累,而且这种电荷的积累正是建立稳恒电场,形成稳恒电流的必要条件。这些净电荷并不分布在均匀导线或负载的内部,只分布在导体或负载的表面、两种导体的交界面处或不均匀导体的内部。

Charge Distribution in the Steady Current Circuit

In the steady current circuit,it is incorrect to hold that either conducting wire or load still maintains its o- riginal electric neutrality everywhere,There is charge accumulation in every segment of either conducting wire or load. And this charge accumulation is a requirement in setting up a steady electric field and forming a steady current.The net charges are not distributed inside the uniform conducting wire or load and they are only distributed on the surface of con- ductor or load,on the interface of two kinds of conductors or inside the nonuniform conductor.