In a certain region of space with volume 0.2 m³, the electric potential is found to be 5 V throughout. The magnitude of electric field in this region is :

Question

Question

This question was previously asked in

NEET 2020 Official Paper (Held On: 13 September, 2020)

Answer 1

CONCEPT:

The electric field in the form of potential can be written as;

\(E = - \frac{{dV}}{{dr}} \) ---- (1)

Where V is the potential.

CALCULATION:

Given :

V = 0.2 m³, V = 5 V

using equation (1) we have,

\(E = - \frac{{dV}}{{dr}} \)

⇒ \(E = - \frac{{d(5)}}{{dr}} \)

⇒ E = 0

Hence, option 3) is the correct answer.