The inward and outward electric fluxes through a closed surface are 8 × 10³ and 4 × 10³ units, respectively. Find the net charge enclosed by the surface.
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Question

The inward and outward electric fluxes through a closed surface are 8 × 10³ and 4 × 10³ units, respectively. Find the net charge enclosed by the surface.

G1 Physics · Accepted Answer

Take outward flux as positive. Net flux is Φ = +4 × 10³ − 8 × 10³ = −4 × 10³. By Gauss's law, Q = ε₀Φ = −4 × 10³ε₀ C. Correct answer: D.