This means there is no net charge at any point
inside the conductor, and any excess charge must reside at the surface 4 Electrostatic potential is constant throughout the volume
of the conductor and has the same value (as inside) on
its surface
This follows from results 1 and 2 above Since E = 0 inside the conductor
and has no tangential component on the surface, no work is done in
moving a small test charge within the conductor and on its surface