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Standard XII
Physics
Equipotential Surfaces
Question

In a region of constant potential:

A
the electric field is uniform.
B
the electric field is zero.
C
there can be no charge inside the region.
D
both (b) and (c) are correct.
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Solution
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In a region of constant potential
E=−dVdr=0 (∵ V= constant)
i.e., electric field is zero, so there can be no charge inside the region.

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