JEE Main 2022PhysicsMagnetic Effects of CurrentEasyNumerical

JEE Main 2022 — Magnetic Effects of Current Question with Solution

JEE Main 2022 (28 Jun Shift 1)

Question

A singly ionized magnesium atom A=24 ion is accelerated to kinetic energy 5keV, and is projected perpendicularly into a magnetic field of the magnitude 0.5 T. The radius of path formed will be _____ cm.

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Show full solutionCorrect answer: 10
Correct answer
10

Step-by-step explanation

The radius of circle formed by a charged particle in a magnetic field perpendicular to the velocity is given by,

R=mVqB⇒R=2mKqB=2×24×1.6×10-27×5000×1.6×10-191.6×10-19×0.5=979×10-4 m≃10 cm

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About this question

This is a previous-year question from JEE Main 2022, 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.