Question

Work done to move 1μC of charge from one point to another point on the surface of an equipotential surface like conductor is

Answer 1

Work done to move 1μC of charge from one point to another point on the surface of an equipotential surface like conductor is ZERO.

But why?

• Work done to move a charge is defined as the product of the magnitude of charge and the potential difference through which it is moved.

Now, in an equipotential surface , potential difference (i.e. ∆V) is zero.

$\sf W = q \times \Delta V$

$\sf \implies W = (1 \times {10}^{ - 6} )\times (0)$

$\sf \implies W =0 \: joules$

So, work done is 0 joules.