# The work done to move a charge along

Question:

The work done to move a charge along an equipotential from A to B

(a) cannot be defined as

$-\int_{A}^{B} E . d l$

(b) must be defined as

$-\int_{A}^{B} E . d l$

(c) is zero

(d) can have a non-zero value

Solution:

$-\int_{A}^{B} E . d l$