10) If a unit charge is taken from one point to another point over an equipotential surface, then:
A. Work is done on the charge.
B. Work is done by the charge.
C. Work done on the charge is constantly increasing.
D. Work done to move a charge is zero.
Solution:
When a charge is moved along an equipotential surface, there is no change in potential, meaning the potential difference between the two points is zero. Since the work done \(W\) in moving a charge \(q\) is given by: \[ W = q \Delta V, \] and \(\Delta V = 0\) for an equipotential surface, the work done is zero. Therefore, the correct answer is option D.
.png)
0 Comments