JEE Main 2020 — Alternating Current Question with Solution
From: JEE Main 2020 (Online) 4th September Evening Slot
Question
A series L-R circuit is connected to a battery of emf V. If the circuit is switched on at t = 0, then
the time at which the energy stored in the inductor reaches times of its maximum value, is :
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
P.E. in inductor,
We know,
= 1 -
taking ln & solving we get,
We know,
= 1 -
taking ln & solving we get,
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This is a previous-year question from JEE Main 2020, covering the Alternating Current 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.