JEE Main 2023PhysicsMagnetic Properties of MatterMediumMCQ

JEE Main 2023 — Magnetic Properties of Matter Question with Solution

JEE Main 2023 (11 Apr Shift 1)

Question

The free space inside a current carrying toroid is filled with a material of susceptibility 2×10-2. The percentage increase in the value of magnetic field inside the toroid will be
 

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Show full solutionCorrect option: C
Correct answer
C2%

Step-by-step explanation

It is given that 

χm=2×10-2

The permeability is μr=1+χm=1+0.02=1.02.

The magnetic field is B=μrB0=1.02B0

Hence, percentage increase in magnetic field is 

B-B0B0×100%=B01.02-1B0×100%=2%

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About this question

This is a previous-year question from JEE Main 2023, 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.