CONTRADICTION IN :: ELECTRIC POTENTIAL AT THE SURFACE OF SHELL

Prateek,

could you explain the situtation slightly better.

You are saying that the distance of the charge from the center is given by a, b and c respectively

The shell is metallic.

So we have to find the potential due to the charge.. Isnt it?

At all these three points?

Now one thing that I am not clear about is.. Is the charge q on the shell a point charge or a charge put on the surface so that it has the chance to redistribute?

The answer/ solvability of the question will depend on that..