Electrostatics

A hollow sphere of radius \(0.1 \mathrm{~m}\) has a charge of \(5 \times 10^{-8} \mathrm{C}\). The potential at a distance of 5 \(\mathrm{cm}\) from the centre of the sphere is \(\left(\frac{1}{4 \pi \varepsilon_0}=9 \times 10^9 \mathrm{Nm}^2 \mathrm{C}^{-2}\right)\)