JEE Main 2021 — Electrostatics Question with Solution
JEE Main 2021 (31 Aug Shift 2)
Question
Choose the incorrect statement:
(a) The electric lines of force entering into a Gaussian surface provide negative flux.
(b) A charge 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:
Choose an option
Show full solutionCorrect option: D
Step-by-step explanation
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, , here , it means, .
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This is a previous-year question from JEE Main 2021, covering the Electrostatics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.