A tiny metal sphere carrying a charge of 2 μC is shifted slowly from a point P, where the electrostatic potential is 40 V, to a point Q, where the potential is 140 V. The work done on the charge by the external agent is:
A tiny metal sphere carrying a charge of 2 μC is shifted slowly from a point P, where the electrostatic potential is 40 V, to a point Q, where the potential is 140 V. The work done on the charge by the external agent is: