Electrostatics

Electric potential at a point '\(\mathrm{P}\)' due to a point charge of \(5 \times 10^{-9} \mathrm{C}\) is \(50 \mathrm{~V}\). The distance of '\(\mathrm{P}\)' from the point charge is:

(Assume, \(\frac{1}{4 \pi \varepsilon_{0}}=9 \times 10^{+9} ~\mathrm{Nm}^{2} \mathrm{C}^{-2}\) )