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Question

A charge Q is placed at the centre of a closed cube, the flux emitting from any one face of the cube will be

A
Q6ε0
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B
Q3ε0
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C
Qε0
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D
Q4ε0
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Solution

The correct option is A Q6ε0
Flux through the cube, ϕ=Qε0
Since charge is placed at the centre, flux through all the six surfaces of the cube will be equal.

So, flux through any one surface, ϕ=ϕ6=Q6ε0.

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