Will any work be done in moving a charge +8 between two points on the surface of an isolated charged metallic sphere?

What is the work done in moving a test charge over the surface of an isolated charged metal sphere.

What is the work done in moving a charge between two points on an equipotential surface?

Correct the following statement. The work done in moving a test charge between two 'points in an electric field depends on the path chosen.

Correct the following statement. Work has to be done in moving a test charge from one point to another on an equipotential surface.

The amount of work done in moving a charge from one point to another in an equipotential surface is _____ ?