The figure below shows a solid spherical conductor. Suppose the conductor has so

Question

The figure below shows a solid spherical conductor. Suppose the conductor has some excess positive charge +0. Where is the excess charge located? A. On the outer surface of the sphere. B. Uniformly distributed throughout the volume of the sphere. C. Concentrated at the center of the sphere. 2/18/2018 Now suppose you have a thick conducting spherical shell with an empty cavity. The shell has excess charge +Q. Where is the excess charge located? A. All the excess charge is located on the outer surface of the shell. B. All the excess charge is located on the inner surface of the shell. C. Some excess charge is on the outer surface, while the rest is on the inner surface. D. The charge is uniformly distributed throughout the volume of the sphere.

Explanation / Answer

According to Gauss's law, any free charge within the conductor produces an electric field within the conductor. This field will pushes the charges to move, until the electric field within the conductor will be zero.

Again, the electric field will be zero only when there is no net free charge within the conductor. So the free charge must have been accumulated on the surface.

Answer: (A) - On the outer surface of the sphere.

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