Q 12-02-016NEETNEET 2020Top questionEasy
In a certain region of space with volume $0.2\ \text{m}^3$, the electric potential is found to be $5$ V throughout. The magnitude of electric field in this region is :
Answer: (A) zero
$E = -\dfrac{dV}{dr}$. The potential is the same everywhere in the region, so its gradient is zero and $E = 0$.
Solution by Sreeraj P, M.Sc Physics