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.

Answer 1

Answer:

In a region of constant potential

E=−  

dr

dV

​  

=0 (∵ V= constant)

i.e., electric field is zero, so there can be no charge inside the region.

Explanation:

Answer 2

Answer:

Both (b) and (c) are correct. ------> Option (d)

Explanation:

In a region of constant potential. The electric field is zero as E=−dVdr=−ddr(constant)=0

Further, according to Gauss's law, charge inside the region should be zero if E=0.

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