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.
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. 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.
Show Hint
No work is done moving a charge along an equipotential surface.
Updated On: Oct 1, 2026
- c
- a
- d
- b
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Check each statement
(a) Work along an equipotential surface is \(W=q\Delta V=0\). The statement says it is not zero, so (a) is false.
(b) True by definition.
(c) True: in a uniform field the surfaces are parallel planes with equal spacing for equal potential steps.
(d) True: the field is perpendicular to the surface.
Step 2: Result
The false statement is (a), which is option (B).
Final Answer:
Statement (a) is not true, option (B). \[ \boxed{\text{(B)}} \]
(a) Work along an equipotential surface is \(W=q\Delta V=0\). The statement says it is not zero, so (a) is false.
(b) True by definition.
(c) True: in a uniform field the surfaces are parallel planes with equal spacing for equal potential steps.
(d) True: the field is perpendicular to the surface.
Step 2: Result
The false statement is (a), which is option (B).
Final Answer:
Statement (a) is not true, option (B). \[ \boxed{\text{(B)}} \]
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