The potential of a charged spherical conductor of radius r is 20 V. The potential at a point $\frac{r}{4}$ from its center is:

20 V

The correct answer is Option (3) → 20 V

As, potential inside the charged spherical conductor always remain constant as it is an equi-potential surface.

∴ $v'$, Potential at center of spherical conductor = 20V