A point charge q is placed at the edge of an imaginary cube of side a as shown in the original question figure.Find the net electric flux through the cube.
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Question

A point charge q is placed at the edge of an imaginary cube of side a as shown in the original question figure.Find the net electric flux through the cube.

G1 Physics · Accepted Answer

Eight identical cubes can be arranged so that the charge lies at the centre of the resulting larger cube. Total flux through the larger cube is q/ε₀. By symmetry, flux through each small cube is Φ = q/(8ε₀).