Nature of equipotential surface for a point charge is

  1. Ellipsoid with charge at foci
  2. Sphere with charge at the centre of the sphere
  3. Sphere with charge on the surface of the sphere
  4. Plane with charge on the surface

Answer (Detailed Solution Below)

Option 2 : Sphere with charge at the centre of the sphere
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CONCEPT:

  • The surface on which potential at each point is same/equal is called equipotential surface.
  • The electric field lines will be perpendicular to the equipotential surface always.

EXPLANATION:

F1 J.K 16.4.20 Pallavi D6

  • In case of a point charge, due to symmetry the electric field at the surface of the sphere will be same for whole surface.
  • Thus it will be an equipotential surface where charge is at the centre of the sphere. Hence option 2 is correct.
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