表面电荷密度[Surface Charge Density] - 达人(其实～我是卧底，来自外星)

2005/04/10 | 表面电荷密度[Surface Charge Density]
类别(Ω〖物理〗) | 评论(1) | 阅读(105) | 发表于 16:42: The surface charge density on a solid is defined as the total amount of charge q per unit area A,
(1)

The surface charge on a surface S with surface charge density is therefore given by
(2)

In cgs, Gauss's law requires that across a boundary
(3)

where is the electric field in medium i and is the unit normal vector, which is equivalent to
(4)

where is the voltage in medium i. Similarly, in MKS,
(5)

where is the permittivity of free space, and
(6)

In a dielectric, the so-called bound surface charge density is given in MKS by
(7)

where P is the electric polarization.; 0