JEE Main 2023PhysicsMagnetic Properties of MatterMediumMCQ

JEE Main 2023 — Magnetic Properties of Matter Question with Solution

JEE Main 2023 (08 Apr Shift 1)

Question

Certain galvanometers have a fixed core made of non magnetic metallic material. The function of this metallic material is

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Show full solutionCorrect option: B
Correct answer
Bto bring the coil to rest quickly

Step-by-step explanation

Certain galvanometers have a fixed core made of nonmagnetic metallic material. When the coil oscillates, the eddy currents generated in the core oppose the motion and bring the coil to rest quickly. Eddy currents are loops of electrical current induced within conductors by a changing magnetic field in the conductor according to Faraday’s law of induction. Eddy currents flow in closed loops within conductors, in planes perpendicular to the magnetic field.

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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.