JEE Main 2019 — Electrostatics Question with Solution
From: JEE Main 2019 (Online) 10th January Morning Slot
Question
A charge Q is distributed over three concentric spherical shells of radii a, b, c (a < b < c) such that their surface charge densities are equal to one another. The total potential at a point at distance r from their common centre, where r < a, would be -
Choose an option
Show full solutionCorrect option: D
Correct answer
D
Step-by-step explanation
Potential at point P, V =
Qa : Qb : Qc : : a2 : b2 : c2
{since a = b = c}
Qa = Q
Qb = Q
Qc = Q
V =
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This is a previous-year question from JEE Main 2019, 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.