JEE Main 2022 — Alternating Current Question with Solution
From: JEE Main 2022 (Online) 28th June Morning Shift
Question
A telegraph line of length 100 km has a capacity of 0.01 F/km and it carries an alternating current at 0.5 kilo cycle per second. If minimum impedance is required, then the value of the inductance that needs to be introduced in series is _____________ mH. (if = )
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Show full solutionCorrect answer: 100
Step-by-step explanation
Total capacitance = 0.01 100 = 1 F
= 500 2 = 1000 rad/s
= 100 mH
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This is a previous-year question from JEE Main 2022, 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.