Question

Why is there no work done in moving a charge from one point to another on an equipotential surface? [Foreign 2012]

Answer 1

Answer:

For an equipotential surface, Vb- Va = 0

since Vb=Va

We know V= W/q

so W = Vq

In this case,

Work done = (Vb-Va)*q = 0*q = 0.

Hence no work is done in moving a charge from one point to another on an equipotential surface