Question

A charge $Q$ is located at the centre of a sphere of radius $R$. Calculate the flux going out through the surface of the sphere.

• A. $\frac{Q}{4\pi {ϵ}_0{R}^2}$
• B. $\frac{Q}{4\pi {ϵ}_{0}R}$
• C. $\frac{Q}{4\pi R^2}$
• D. $\frac{Q}{{ϵ}_0}$

Answer 1

The correct option is D $\frac{Q}{{ϵ}_0}$

Flux going out of a closed surface is given by charge inside closed surface divided by permittivity of free space.

$\varphi =\frac{Q}{{ϵ}_o}$

Answer-(D)