JEE Main 2014 — Magnetic Properties Of Matter Question with Solution
From: JEE Main 2014 (Offline)
Question
The coercivity of a small magnet where the ferromagnet gets demagnetized is The current required to be passed in a solenoid of length and number of turns so that the magnet gets demagnetized when inside the solenoid, is :
Choose an option
Show full solutionCorrect option: C
Correct answer
C
Step-by-step explanation
Magnetic field in solenoid
(Where number of turns per unit length)
(Where number of turns per unit length)
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This is a previous-year question from JEE Main 2014, covering the Magnetic Properties Of Matter 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.