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A charge q is placed at the centre of a...

A charge `q` is placed at the centre of a cube.What is the electric flux associated with one of the faces of cube ..............

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The cube is a closed surface , hence using Gauss.s law , the total flux passing through cube is `Q/epsilon_0`. On the other hand, charge is kept at the centre of cube so equal flux will be associated with each suface . A cube has six surfaces, hence the flux for each face `=Q/(6epsilon_0)`
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MODERN PUBLICATION-ELECTRIC CHARGES AND FIELDS -Chapter Practice Test
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