Within a spherical charge distribution of charge density ρ(r), N equipotential surfaces of potential V0, V0 + V, V0 + 2V, .......... V0 + NV (V>0), are drawn and have increasing radii r0, r1, r2,..........rN, respectively. If the difference in the radii of the surfaces is constant for all values of V0 and V then :
As we learnt in
Relation between field and potential -
If P at the surface r = R -
Here and are same for any pair of surfaces.
Now, electric field inside the spherical charge distribution
E would be constant of