(a) Calculate the potential at a point P due to a charge of `4xx10^(-7) C` located 9 cm away.

(a) Calculate the potential at a point P due to a charge of `4xx10^(-7) C` located 9 cm away. (b) Hence obtain the work done in bringing a charge of `2xx10^(-9) C` from infinity to the point P. Does the answer depend on the path along which the charge is brought ?