Sat January 12, 2013 By: Arti Chauhan

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

Expert Reply
Sat January 12, 2013
Since, the cube encloses the charge ‘q’ the net flux through the cube (through 6 faces) is q/?0 Two faces of the cube comprises 1/3 of the total surface of the cube. Therefore, the flux through two faces is, q/3?0.
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