Skip to main content

All Questions

Tagged with
0 votes
1 answer
77 views

Doubt regarding proof of Earnshaw's Theorem using Gauss's theorem

While proving Earnshaw's theorem using Gauss's theorem, we consider a small sphere surrounding our test charge, and apply Gauss law on this sphere, stating that field from all external charges must ...
Eisenstein's user avatar
0 votes
1 answer
65 views

Why charges reside only on the surface on conductor?

I wonder why charges reside only on the surface on conductor? And I read this question and the answer to it: Why charges reside on the surface on conductor? https://physics.stackexchange.com/a/210634/...
佐武五郎's user avatar
2 votes
4 answers
489 views

If we have a net negative charge in a spherical conductor, why negative charges goes to the surface?

So imagine that we have a set of net negative charges, in physics books they said that this set of charges goes to the surface because they repel each other in such a way that this reach to an ...
maenju's user avatar
  • 129
0 votes
1 answer
119 views

Why charges should go to the surface of conductor? [duplicate]

How can we show that charges should go to the surface of a conductor, assuming that system should minimize its energy? (With no additional assumptions and maybe using variation method!)
a.p's user avatar
  • 245
2 votes
1 answer
160 views

Earnshaw's Theorem in Chemical Bonds

Earnshaw's theorem says that: A collection of point charges cannot be maintained in a stable stationary equilibrium configuration solely by the electrostatic interaction of the charges. I also know ...
Karthik's user avatar
  • 1,898
1 vote
0 answers
140 views

Unstable equilibrium due to an arbitrary electrostatic configuration

Suppose n charges are put in an arbitrary electrostatic configuration and a small test charge is placed at a null point (i.e., where $\vec{E}=0$ ) of the configuration. The task is to show that the ...
Aditya's user avatar
  • 243
6 votes
1 answer
35k views

Why charges reside on the surface on conductor? [duplicate]

In a hollow conductor and in a spherical shell the charges reside on its surface and there is no electric field inside it.Please tell me the reason behind it.
Lakshay Gupta's user avatar
2 votes
4 answers
8k views

Why are excess charges in a conductor at the surface?

I’ve been told that coulomb repulsion pushes excess electrons to the surface of a conductor (i.e. sphere) electrostatic equilibrium, and this symmetry causes the net electric field inside to be zero. ...
lightweaver's user avatar
  • 1,499