Question

If a unit charge is taken from one point to another over an equipotential surface, then

• A. work is done on the charge
• B. work is done by the charge
• C. work on the charge is constant
• D. no work is done

Answer 1

The correct option is D no work is done

$\to$ We know equipotential surface has constant potential and they are perpendicular to electric field.
We know work done $=\Delta V\times Q$
As there is no change in $V$ while moving on equipotential surface
Work done $=0$