Question Detail
Question
For any charge configuration, the equipotential surface through a point is ________ to the electric field at that point.
Correct Answer
Option A is the correct answer.
Detailed Explanation
Electric field lines always cross equipotential surfaces at right angles, since no work is done moving along an equipotential surface (field has no component along it).
Hint
Since no work is done moving along an equipotential surface, the field can have no component along that surface.