JEE Main 2019 — Electromagnetic Induction Question with Solution
From: JEE Main 2019 (Online) 9th April Evening Slot
Question
A very long solenoid of radius R is carrying
current I(t) = kte–at(k > 0), as a function of time
(t 0). counter clockwise current is taken to be
positive. A circular conducting coil of radius
2R is placed in the equatorial plane of the
solenoid and concentric with the solenoid. The
current induced in the outer coil is correctly
depicted, as a function of time, by :-
Choose an option
Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
= –C (e–t) (1 – t)
Clearly, at t = 0
Induced current 0
Also, apply Lenz law to find correct option
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This is a previous-year question from JEE Main 2019, covering the Electromagnetic Induction 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.