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Chapter 23

Gauss's Law

电通量
电通量
The concept of flux describes how much of something goes through a given area. More formally, it is the dot product of a vector field within an area. For ...
电通量的计算
电通量的计算
Consider the electric field of an oppositely charged, parallel-plate system and an imaginary box between those plates. Let the bottom face of the box be ...
高斯定律
高斯定律
If a closed surface does not have any charge inside where an electric field line can terminate, then the electric field line entering the surface at one ...
高斯定律:解决问题
高斯定律:解决问题
Gauss's law helps determine electric fields even though the law is not directly about electric fields but electric flux. In situations with certain ...
高斯定律:球对称性
高斯定律:球对称性
A charge distribution has spherical symmetry if the density of charge depends only on the distance from a point in space and not on the direction. In ...
高斯定律:圆柱对称性
高斯定律:圆柱对称性
A charge distribution has cylindrical symmetry if the charge density depends only upon the distance from the axis of the cylinder and does not vary along ...
高斯定律:平面对称
高斯定律:平面对称
A planar symmetry of charge density is obtained when charges are uniformly spread over a large flat surface. In planar symmetry, all points in a plane ...
导体内部的电场
导体内部的电场
When a conductor is placed in an external electric field, the free charges in the conductor redistribute and very quickly reach electrostatic equilibrium. ...
导体上的电荷
导体上的电荷
An interesting property of a conductor in static equilibrium is that extra charges on the conductor end up on its outer surface, regardless of where they ...
导体表面的电场
导体表面的电场
Consider a conductor in electrostatic equilibrium. The net electric field inside a conductor vanishes, and extra charges on the conductor reside on its ...
带电不均匀的球体的电场
带电不均匀的球体的电场
Gauss's law states that the electric flux through any closed surface equals the net charge enclosed within the surface. This law is beneficial for ...
平行导电板的电场
平行导电板的电场
Gauss' law relates the electric flux through a closed surface to the net charge enclosed by that surface. Gauss's law can be applied to find the ...
电场的发散和旋度
电场的发散和旋度
The divergence of a vector is a measure of how much the vector spreads out (diverges) from a point. For example, an electric field vector diverges from ...
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