Practice portal › Electric Charge and Properties › Electric Flux and Gauss's Law
Asked in RS Academy GUJCET booklet · Flux through a cube
Idea: Gauss's law gives the total flux out of the closed cube, φ=Q/(ε₀), since Q is inside.
With Q at the centre, all six faces are placed identically around it, so by symmetry each carries the same flux.
φ_face=1/6×Q/(ε₀)=Q/(6ε₀)
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