Question

A point of charge 12 micro coulomb is located at the centre of a cube of side 1m calculate the electric flux through each face of the cube.

Answer 1

q = 12×10^-6 C

So, the electric flux passing through the cube => ( formula shown in figure)

Electric Flux = (12×10^-6)/(8.854×10^-12)

Electric Flux = 1.35×10^6 N-m^2/C

Now, because a cube has 6 face, so the electric flux passing through one face =

= 1.35×10^6/6

= 0.226×10^6

= 2.26×10^5 N-m^2/C.....●