JEE Main 2021 — Electromagnetic Induction Question with Solution
From: JEE Main 2021 (Online) 18th March Evening Shift
Question
The time taken for the magnetic energy to reach 25% of its maximum value, when a solenoid of resistance R, inductance L is connected to a battery, is :
Choose an option
Show full solutionCorrect option: C
Correct answer
C ln2
Step-by-step explanation
Magnetic energy, U = LI
Given : U = 25% of U0.
Given : U = 25% of U0.
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This is a previous-year question from JEE Main 2021, covering the Electromagnetic Induction 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.