1.

A point charge q is placed at the centre of a cube. What is the flux linked. a with all the faces of the cube? b. with each face of the cube? c. if charge is not at the centre, then what will be the answer of parts a and b ?A. `(piq)/(6(4pi epsilon_(0)))`B. `(q)/(6(4pi epsilon_(0)))`C. `(2piq)/(6(4pi epsilon_(0)))`D. `(4piq)/(6(4pi epsilon_(0)))`

Answer» Correct Answer - d
By Gauss law in electrostatic, electric flux through any closed surface is `(q)/(epsilon_(0))`
If the charge is located at the centre of the cube it is placed symmetrically with respect to each other. `:.` Electric flux through each face is
`(1)/(6) (q)/(epsilon)=(1)/(6) (4piq)/((4pi epsilon_(0)))`


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