Question

Which of the following statements is NOT TRUE?
a. Work done to move a charge on an equipotential surface is not zero.
b. Equipotential surfaces are the surfaces where the potential is constant.
c. Equipotential surfaces for a uniform electric field are parallel and equidistant from each other.
d. Electric field is always perpendicular to an equipotential surface.

• A. c
• B. a
• C. d
• D. b

Hint:

No work is done moving a charge along an equipotential surface.

Answer 1

The Correct Option is B

Step 1: Use $W=q\Delta V$
On an equipotential surface $\Delta V=0$, so $W=0$. The other three statements agree with standard facts. So (a) is the odd one out, option (B).

Final Answer:
Option (B). \[ \boxed{\text{(B)}} \]