JEE Main 2023 — Magnetic Effects of Current Question with Solution
JEE Main 2023 (24 Jan Shift 1)
Question
Two long straight wires and carrying equal current each were kept parallel to each other at distance. Magnitude of magnetic force experienced by length of wire is . If distance between wires is halved and currents on them are doubled, force on length of wire will be:
Choose an option
Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
As we know, force per unit length between two parallel straight wires is given by, .
Therefore, required ratio
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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.