JEE Main 2021 — Alternating Current Question with Solution
From: JEE Main 2021 (Online) 18th March Morning Shift
Question
In a series LCR resonance circuit, if we change the resistance only, from a lower to higher value :
Choose an option
Show full solutionCorrect option: A
Correct answer
AThe bandwidth of resonance circuit will increase.
Step-by-step explanation
2f =
f =
f does not depends on resistance(R).
Quality factor,
So if R increase then Q will decrease.
Also,
where = bandwidth
So if R increase then will increase too.
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This is a previous-year question from JEE Main 2021, 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.