JEE Main 2026 — Alternating Current Question with Solution
JEE Main 2026 (23 January Shift 1)
Question
Using a variable frequency a.c. voltage source the maximum current measured in the given LCR circuit is 50 mA for The values of and are shown in the figure. The capacitance of the capacitor (C) used is .
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Show full solutionCorrect answer: 50
Correct answer
50
Step-by-step explanation
From , angular frequency rad/s
At resonance in LCR circuit: , so
Maximum current occurs at resonance:
(verified at resonance)
From resonance condition:
F = 50 μF
At resonance in LCR circuit: , so
Maximum current occurs at resonance:
(verified at resonance)
From resonance condition:
F = 50 μF
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This is a previous-year question from JEE Main 2026, 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.