Question
A charge q is located at the centre of a cube. The electric flux through any face is
Solution
A.
According to Gauss's theorem, electric flux through the cube (closed surface)
q = total charged enclosed by surface S
The law implies that the total electric flux through a closed surface is zero if no change is enclosed by the surface.
Since, cube has six surfaces and all the faces are symmetrical, therefore electric flux through any face
