A charge Q is placed at the centre of a cube of side L. what is the flux passing through each face of the cube?
According to Gauss’ Theorem, the total electric flux through all the six faces of the cube is,
φ = Charge enclosed / ε 0
φ = q /ε 0
Each face of the cube comprises 1/6 of the total surface of the cube. Therefore, the flux passing through each face is,
φ = 1/6 ? q/ε 0 = q /6 ε 0