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

The correct option is D both (b) and (c) are correct.

In a region of constant potential
$E=-\frac{dV}{dr}=0$ ($\because$ $V=$ constant)
i.e., electric field is zero, so there can be no charge inside the region.