If a rod l with charge is placed at center of cube find minimum electric field through faces
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According to Gauss’s law,
∮E⋅ds=Q/ϵ∮E⋅ds=Q/ϵ
Therefore the total flux through the cube is Q/ϵ.Q/ϵ.
The flux through each side of the cube is Q/6ϵQ/6ϵ.
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