Question

If there is a charge on the surface of sphere, what will be the electric field inside the sphere?

Answer 1

If there is a charge on the surface of a conducting sphere, the electric field inside the sphere will be zero.

This is due to the fact that a conducting sphere is a material with high conductivity, and any charge placed on its surface will distribute itself uniformly over the surface. The electric field inside a conductor is always zero, regardless of the shape of the conductor, since any electric field inside the conductor would result in a flow of charges, which would redistribute the charges until the electric field is canceled out.

Thus, if there is a charge on the surface of a conducting sphere, the electric field inside the sphere will be zero, since any electric field inside the sphere would cause charges to move until the electric field is zero. This is true even if the sphere is not a perfect conductor but has some resistance, as long as the conductivity is high enough to allow for the uniform distribution of the charge.