Question

A charge $Q$ is situated at the centre of a cube. The electric flux through one of the faces of the cube is

• A. $Q/{ϵ}_0$
• B. $Q/2{ϵ}_0$
• C. $Q/4{ϵ}_0$
• D. $Q/6{ϵ}_0$

Answer 1

The correct option is D $Q/6{ϵ}_0$

The electric flux through the whole cube:

$\varphi =\frac{Q}{{\epsilon }_0}$

Flux through each face will be one sixth of the total:

$\varphi =\frac{Q}{6{\epsilon }_0}$