Equipotential Surfaces
Equipotential Surfaces
An equipotential surface is one where the potential is same at every point on the surface. For a single charge,
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Since r is constant, the equipotential surfaces are concentric spherical surfaces centred at the charge.
Electric field lines are radial starting from or ending at the charge for positive and negative charges respectively.
For any charge configuration, equipotential surface through a point is normal to the electric field at that point.