alleryStart learning →An equipotential surface is one on which
Athe electric field is always zero
Bno work is done in moving a charge over it
Cthe potential increases along the surface
Dcharges cannot be placed
Answer & Solution
Correct answer: B. no work is done in moving a charge over it
1. Every point on an equipotential surface is at the **same potential**, so $\Delta V = 0$ between any two of its points.
2. Work $W = q\,\Delta V = 0$ for motion along the surface.
3. The field is always perpendicular to an equipotential surface (not necessarily zero).
_Source: Samacheer Kalvi Class 12 Physics Vol.1, Unit 1 'Electrostatics', Short Answer Q.11-12_
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