JEE Main 2020 — Alternating Current Question with Solution
From: JEE Main 2020 (Online) 7th January Evening Slot
Question
An emf of 20 V is applied at time t = 0 to a circuit containing in series 10 mH inductor and 5
resistor. The ratio of the currents at time t = and at t = 40 s is close to : (Take e2 = 7.389)
Choose an option
Show full solutionCorrect option: A
Correct answer
A1.06
Step-by-step explanation
i = i0(1 - )
i = i0(1 - ) = i0
=
= 1
Then most appropriate option is 1.06
i = i0(1 - ) = i0
=
= 1
Then most appropriate option is 1.06
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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.