JEE Main 2023 — Magnetic Properties of Matter Question with Solution
JEE Main 2023 (08 Apr Shift 2)
Question
Given below are two statements: one is labelled as Assertion and the other is labelled as Reason .
Assertion A : Electromagnets are made of soft iron.
Reason R : Soft iron has high permeability and low retentivity.
In the light of above statements, choose the most appropriate answer from the options given below.
Choose an option
Show full solutionCorrect option: C
Step-by-step explanation
A coil surrounding a magnetic core having high permeability and low retentivity, through which an electric current is fed to magnetise the core is what makes up an electromagnet. Wherever controllable magnets are needed, as in devices where the magnetic flux needs to be adjusted, reversed, or turned on and off, an electromagnet is used.
Hence, both A and R are correct and R is the correct explanation of A.
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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.