Gaussian surfaces: Electric Field=zero

  • Thread starter ichigo444
  • Start date
  • #1
12
0

Main Question or Discussion Point

Please explain to me in detail why a gaussian surface within a conductor has an electric field of zero? thanks.
 
Last edited:

Answers and Replies

  • #2
461
8
Please explain to me in detail why a gaussian surface within a conductor has an electric field of zero? thanks.
Because charge goes on the surface of a conductor in electrostatic equilibrium. Using Gauss law with an internal gaussian surface will show that the electric field is 0 inside a conductor.
 
  • #3
Born2bwire
Science Advisor
Gold Member
1,779
18
Please explain to me in detail why a gaussian surface within a conductor has an electric field of zero? thanks.
A conductor is a material where the charges are free to move throughout the material bulk. This results in a self-correcting behavior because if we were to apply a static electric field across a conductor, the electric field separates the negative electrons from the positive (largely) immobile ions in the material. The separation of the charges creates another secondary electric field that will oppose the applied field. The natural movement is thus that the charges will arrange themselves such that no net field exists inside the conductor. Because if there was a net field, more charges would be moved about that would create a secondary field that further decreased the net field. In the end, the equilibrium of no net field is reached.
 

Related Threads on Gaussian surfaces: Electric Field=zero

Replies
2
Views
1K
Replies
4
Views
840
  • Last Post
Replies
3
Views
3K
Replies
12
Views
5K
Replies
1
Views
1K
Replies
7
Views
3K
Replies
5
Views
53K
  • Last Post
Replies
2
Views
1K
Replies
32
Views
3K
Top