JEE Main 2023PhysicsMagnetic Effects of CurrentEasyNumerical

JEE Main 2023 — Magnetic Effects of Current Question with Solution

JEE Main 2023 (10 Apr Shift 2)

Question

A straight wire carrying a current of 14 A is bent into a semicircular arc of radius 2.2 cm as shown in the figure. The magnetic field produced by the current at the centre O of the arc is ____ × 10–4 T

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Show full solutionCorrect answer: 2
Correct answer
2

Step-by-step explanation

It is given that 

i=14 AR=2.2×10-2 m

The magnetic field at the centre O is

B=μ0i4R=4π×10-7×144×2.2×10-2=2×10-4 T

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About this question

This is a previous-year question from JEE Main 2023, 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.