alleryOn an equipotential surface, the work done in moving a test charge between any two points is
Amaximum
Bzero
Cdependent on the path length
Dequal to qE × d
Answer & Solution
Correct answer: B. zero
1. By definition, V is the same at every point on an equipotential surface.
2. Work = q × ΔV; since ΔV = 0, work = 0 regardless of path.
3. So E is perpendicular to the surface everywhere on it.
_Source: syllabus Physics Part I, Ch 2 §2.6_
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