MHT CET 2024 Physics question
If the electric flux entering and leaving an enclosed surface is and then charge enclosed in the surface is ( = permittivity of free space)
Answer: (D)
Solution
Gauss's law: the net outward flux through a closed surface equals . Flux leaving is counted positive () and flux entering is negative (), so the net outward flux is $Φ_2 - Φ_1 =
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