[QUIZ/EM-04002] A thick spherical shell and a point charge

For a thick conducting spherical shell of radii \(a<b\) find the potential everywhere
(i) when the charge is outside the shell held at constant potential \(\phi_0\), see Fig. 1
(ii) when the charge is inside the shell, but not at the center of the shell, see Fig. 2
As usual, assume that the potential vanishes at infinity.

Hint::
You may write the answer directly with a couple of lines of explanation.
If it helps, you may  use the method of images.

Fig1		Fig2