JEE Main 2020PhysicsAlternating CurrentHardMCQ

JEE Main 2020Alternating Current Question with Solution

JEE Main 2020 (07 Jan Shift 1)

Question

A LCR circuit behaves like a clamped harmonic oscillator. Comparing it with a physical spring-mass damped oscillator having damping constant 'b', the correct equivalence would be:

Choose an option

Show full solutionCorrect option: D
Correct answer
DLm,C1k,Rb

Step-by-step explanation

In damped oscillation ma+bv+kx=0

md2xdt2+bdxdt+kx=0..i
In the circuit
-iR-Ldidt-qc=0
Ld2qdt2+Rdqdt+1c.q=0..ii
Comparing equation (i) and (ii)
m=L,b=R,k=1c

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About this question

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.