JEE Main 2024PhysicsMagnetic Effects of CurrentEasyNumerical

JEE Main 2024 — Magnetic Effects of Current Question with Solution

JEE Main 2024 (29 Jan Shift 1)

Question

The magnetic potential due to a magnetic dipole at a point on its axis situated at a distance of 20 cm from its center is 1.5×10-5 T m. The magnetic moment of the dipole is _______ A m2. (Given : μ04π=10-7 T m A-1)

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Show full solutionCorrect answer: 6
Correct answer
6

Step-by-step explanation

The formula to calculate the magnetic potential due to a magnetic dipole can be written as

V=μ04πMr2   ...1

Substitute the values of the known parameters into equation (1) and solve to calculate the required magnetic moment of the dipole.

1.5×10-5=10-7×M20×10-22⇒M=1.5×10-5×20×20×10-410-7⇒M=1.5×4=6 A m2

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About this question

This is a previous-year question from JEE Main 2024, covering the Magnetic Effects of Current 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.