E and V, respectively, denote electric field intensity and electrostatic potential at a point. The correct relation between the two is
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → $E=-dV/dr$
The electric field $\vec{E}$ is related to the electrostatic potential $V$ by:
$\vec{E} = - \vec{\nabla} V$
In one dimension:
$E = - \frac{dV}{dx}$
The negative sign indicates that the electric field points in the direction of decreasing potential.