For a uniformly charged thin spherical shell, the electric potential V radially away from the centre O of shell can be graphically represented as

Step-by-step solution

The potential is constant inside the sphere as the electric field is zero inside the sphere. So, the value is given by V = Q 4 π ε 0 R for r < R The potential at the surface is V = Q 4 π ε 0 R The potential outside the sphere starts decreasing and is given by the formula V = Q 4 π ε 0 r for r > R