JEE Main 2020 (8 Jan, Shift 1) Physics Q13: Gauss's Law

Question

In finding the electric field using Gauss law the formula $\left|\vec{E}\right| = \frac{q_{enc}}{\epsilon_0 |A|}$ is applicable. In the formula $\epsilon_0$ is permittivity of free space, A is the area of Gaussian surface and $q_{enc}$ is charge enclosed by the Gaussian surface. This equation can be used in which of the following situation ?

Accepted Answer

Option 3: Only when the Gaussian surface is an equipotential surface and $\left|\vec{E}\right|$ is constant on the surface.

Answer

For any choice of Gaussian surface.

Answer

Only when the Gaussian surface is an equipotential surface.

Answer

Only when the Gaussian surface is an equipotential surface and $\left|\vec{E}\right|$ is constant on the surface.

Answer

Only when $\left|\vec{E}\right|$ = constant on the surface.

JEE Main 8 January 2020, Shift 1, Physics Q13

Same topic in other shifts