We know that electric flux is a scalar quantity and this is the scalar product of the magnitude of electric field and surface area.
Recall, the formula given by Gauss theorem, ϕ=E⋅A=EAcosθ, here θ=90∘, it means, ϕ=0.
JEE Main 2021 — Physics Electromagnetism
Choose the incorrect statement:
(a) The electric lines of force entering into a Gaussian surface provide negative flux.
(b) A charge q is placed at the centre of a cube. The flux through all the faces will be the same.
(c) In a uniform electric field net flux through a closed Gaussian surface containing no net charge, is zero.
(d) When an electric field is parallel to a Gaussian surface, it provides a finite non-zero flux.
Choose the most appropriate answer from the options given below:
Held on 31 Aug 2021 · Verified 6 Jul 2026.
(b) and (d) Only
(c) and (d) Only
(a) and (c) Only
(d) Only
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