JEE Main 2024PhysicsElectromagnetic InductionEasyNumerical

JEE Main 2024 — Electromagnetic Induction Question with Solution

JEE Main 2024 (29 Jan Shift 2)

Question

A horizontal straight wire 5 m long extending from east to west falling freely at right angle to horizontal component of earth's magnetic field 0.60×10-4 Wb m-2. The instantaneous value of emf induced in the wire when its velocity is 10 m s-1 is _______×10-3 V.

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Show full solutionCorrect answer: 3
Correct answer
3

Step-by-step explanation

Horizontal component of earth's magnetic field, 

BH=0.60×10-4 Wb m-2.

Induced emf e=BHvℓ

=0.60×10-4×10×5

=3×10-3 V

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About this question

This is a previous-year question from JEE Main 2024, covering the Electromagnetic Induction 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.