Question

A charge of `2xx10^(-9) C` is placed on a corner of a cube of side 1m. Find the electric flux passing throguh a face of the given cube ?

Answer 1

Correct Answer - `28.25 NC^(-1) m^(2)`
As is clear from Fig, eight cubes will be required to form a Gaussain surface such that the given charge of `2xx10^(-9) C` appears at the center of the bigger cube.

Thus electric flux passing through given small cube
`phi = (1)/(8) ((q)/(in_(0))) = (1)/(8) xx 28.25 NC^(-1) m^(2)`
`= 9.42 NC^(-1) m^(2)`