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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
Both $(A)$ and $(R)$ are correct but $(R)$ is not the correct explanation of $(\mathrm{A})$
$(A)$ is correct but $(R)$ is not correct
$(A)$ is not correct but $(R)$ is correct
Both $(A)$ and $(R)$ are correct and $(R)$ is the correct explanation of $(A)$
Solution
Electric line of force are always perpendicular to equipotential surface so angle between farce and displacement will always be $90^{\circ}$. So work done equal to $0$ .
