JEE Main 2019PhysicsMagnetic Properties of MatterEasyMCQ

JEE Main 2019 — Magnetic Properties of Matter Question with Solution

JEE Main 2019 (09 Jan Shift 1)

Question

A bar magnet is demagnetized by inserting it inside a solenoid of length 0.2 m, 100 turns, and carrying a current of 5.2 A. The coercivity of the bar magnet is:

Choose an option

Show full solutionCorrect option: B
Correct answer
B2600 A/m

Step-by-step explanation

Coercivity =nI=1000.2×5.2  A/m

=2600 A/m

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About this question

This is a previous-year question from JEE Main 2019, 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.