Question

A positive charge $Q$ is situated at the centre of a cube. The electric flux through any face of the cube is (in SI units) :

• A. $\frac{Q}{6{\epsilon }_0}$
• B. $4\pi Q$
• C. $\frac{Q}{4\pi {\epsilon }_0}$
• D. $\frac{Q}{6\pi {\epsilon }_0}$

Answer 1

The correct option is A $\frac{Q}{6{\epsilon }_0}$

Total flux $=\frac{Q}{{\epsilon }_0}$ using Gauss's law
$\therefore$ flux through one face $=\frac{Q}{6{\epsilon }_0}$