In this case \(\frac r2< r
\) point will be inside
Electric field inside \(E_{in} = 0\)
\(\triangledown V = - \int\limits_s^p E.dr
\)
\(V_p - V_s = -\int 0 dr\)
\(V_p - V_s = 0\)
\(V_p = V_s\)
\(V_p = V_s =\frac{k\theta} r\)
inside electric potential will be constant.
