A point charge q is placed in free space at the centre of a cubical gaussian surface of side a what is electric flux through two of its opposite faces
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If charge is placed in the centre of cube,
flux through surface of cube is 6ϕ , where ϕ is flux through each face.
by Gauss's law,
6ϕ=q∈0
=> ϕ=q6∈0
Hence B is the correct answer.
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