Question

A point charge $q$ is placed at a point $\text{P}$, other than centre $\text{O}$ of a cube, as shown in the figure. The flux linked with each face of the cube,

• A. will be $\frac{q}{6{ϵ}_0}.$
• B. will be same.
• C. will be $\frac{q}{3{ϵ}_0}.$
• D. will not be same.

Answer 1

The correct option is D will not be same.

As the charge is not kept at the centre of the cube, a greater number of electric field lines will pass through surfaces of the cube near the charge and, a smaller number of electric field lines will pass through surfaces of the cube, away from the charge.

So, the electric flux linked with each face of the cube will not be same.

Hence, $\left(D\right)$ is the correct answer.