Question

Given below are two statements : one is labelled a Assertion (A) and the other is labelled as Reason(R)
Assertion (A) : Work done by electric field on moving a positive charge on an equipotential surface is always zero.
Reason (R) : Electric lines of forces are always perpendicular to equipotential surfaces.
In the light of the above statements, choose the most appropriate answer from the options given below :

• A. Both (A) and (R) are correct but (R) is not the correct explanation of (A)
• B. (A) is correct but (R) is not correct
• C. (A) is not correct but (R) is correct
• D. Both (A) and (R) are correct and (R) is the correct explanation of (A)

Answer 1

The Correct Option is D

The work done by an electric field when moving a charge on an equipotential surface is zero because there is no change in electric potential energy. Electric lines of force are always perpendicular to equipotential surfaces, meaning that any movement along the surface does not alter the electric potential, confirming that no work is done.

The Correct answer is: Both (A) and (R) are correct and (R) is the correct explanation of (A)