Question

A charge q is placed at the center of a cube of side l. What is the electric flux passing through two opposite faces of the cube?

Answer 1

Since, the cube encloses the charge ‘q’ the net flux through the cube .According to Gauss's Theorem . (through 6 faces) is q/ε₀

Two faces of the cube comprises 1/3 of the total surface of the cube. Therefore, the flux through two faces is, q/3ε₀