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Equipotential Surfaces

Question

Equipotentials at a great distance from a collection of charges whose total sum is not zero are approximately:
ellipsoids.
spheres
planes
paraboloids

A

paraboloids

B

planes

C

spheres

D

ellipsoids.

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Solution

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A collection of charge located at a very large distance can b considered as the point charge. Now the equipotential surface for a point charge will have the same distance from the point in all the directions.

Therefore, the euipotential points for a point charge will have a spherical surface.
So, Option $A$ is correct.

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