A 500μC charge is at the centre of a square of side 10cm. Find the work done in moving a charge of 10μC between two diagonally opposite points on the square.
The points A and B are equidistant from the centre of square where charge q = 500μC is located; therefore, points A and B are at the same potential i.e., VA =VB
Work done in moving charge q0 =10μC from A to B is W = q0 (VB- VA ) = 0
