Charges inside a metal sphere will tend to go towards

In summary, there was a discussion about where the charges would go on a metallic sphere that is charged. The conclusion was that the charges would be uniformly distributed due to terms like volume charge density and the fact that the metallic sphere tries to make the electric field inside equal to zero. It was also mentioned that inside a conductor, the electrostatic field is zero, at the surface of a charged conductor the electric field is normal to the surface, and the electrostatic potential is constant throughout the conductor. It was acknowledged that the previous answer given by the individual in an exam was incorrect.
  • #1
jaus tail
615
48

Homework Statement


A metallic sphere is charged. Where will the charges go?
At center or on surface or uniformly distributed.

Homework Equations


I think it should be uniformly distributed. Cause that's why we have terms like volume charge density like we do q/volume.

The Attempt at a Solution


It was actually in the big exam that I was talking about, and I answered that charges will be uniformly distributed.
Is that the right answer? Results are out on 28 march.
 
Physics news on Phys.org
  • #2
i think charges will go to the surfaces
if there is excess charge(suppose +ve) inside the metallic sphere in static situation it will produce electric field.then free electrones move to the +ve charge to neutralize it.movement of free electrones cause +ve charge somewhere else.ie,the metallic sphere tries to make electric field inside=0.so +ve charges move towards the surfaces and alligned there so that electric field inside=0 and has electric field outwards
1.inside a conductor,electrostatic field is 0
2.at surface of charged conductor E.F is normal to surface
3.electrostatic potential is constant throughout the conductor
4.the interior of a conductor has no excess charge
 
  • #3
Oh ... another wrong answer i gave at the exam. it's a disaster.:frown:
Thanks for the reply.
 

FAQ: Charges inside a metal sphere will tend to go towards

What is the reason for charges inside a metal sphere to tend to go towards the surface?

The reason for this is because metal is a conductor and allows for charges to move freely. When charges are placed inside a metal sphere, they will repel each other and spread out as much as possible. This results in the charges moving towards the surface of the sphere.

How does the shape of the metal sphere affect the distribution of charges inside?

The shape of the metal sphere does not significantly affect the distribution of charges inside. As long as the sphere is a conductor, the charges will still tend to move towards the surface due to repulsion.

What happens to the charges inside a metal sphere if an external electric field is applied?

If an external electric field is applied, the charges inside the metal sphere will rearrange themselves in a way that the external field cancels out the electric field inside the sphere. This is known as the Faraday cage effect.

Can charges be stored inside a metal sphere permanently?

No, charges cannot be stored inside a metal sphere permanently. Due to the conductive nature of the metal, the charges will eventually dissipate and spread out evenly on the surface of the sphere.

How does the size of the metal sphere affect the distribution of charges inside?

The size of the metal sphere does not significantly affect the distribution of charges inside. As long as the sphere is a conductor, the charges will still tend to move towards the surface due to repulsion. However, a larger sphere will have a greater surface area and therefore can hold more charges on its surface.

Back
Top