JEE Main 2021 — Electrostatics Question with Solution
From: JEE Main 2021 (Online) 26th February Evening Shift
Question
27 similar drops of mercury are maintained at 10V each. All these spherical drops combine into a single big drop. The potential energy of the bigger drop is __________ times that of a smaller drop.
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Show full solutionCorrect answer: 243
Correct answer
243
Step-by-step explanation
R = 3r
Potential energy of smaller drop :
Potential energy of bigger drop :
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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.