Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Electrostatic Potential and Capacitance

Question:

If a point charge q is placed at the centre of a cube what is the flux linked with each face of the cube?

Options:

$\phi=\frac{1}{\epsilon_0} q$

$\phi=\frac{3}{\epsilon_o} q$

$\phi=\frac{6}{\epsilon_o} q$

$\phi=\frac{1}{6 \in_o} q$

Correct Answer:

$\phi=\frac{3}{\epsilon_o} q$

Explanation:

Now as cube is a symmetrical body with a faces and the point charge is at its centre, so electric flux linked with each face will be

$\phi_{F}=\frac{1}{6} \phi=\frac{q}{6 \in_{o}}$