Question

depict equipotentialsurfaces due to an isolated point charge. Why do the equipotential surfaces get closer as the distance between the equipotential surface and the source charge decreases?

Answer 1

These are always perpendicular to field lines.

No work is done in moving the test charge fromone point of equipotential surface to the other.

Answer 2

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Characteristics of equipotential surfaces :

(i) These are always perpendicular to field lines.

(ii) No work is done in moving the test charge from

one point of equipotential surface to the other. On reducing the distance of source charge, the electric field becomes strong and equipotential surface comes closer.

For an isolated point charge, the equipotential surfaces are shown below