JEE Main 2026 — Magnetic Effects of Current Question with Solution
JEE Main 2026 (28 January Shift 1)
Question
The magnetic field at the centre of a current carrying circular loop of radius is . The magnetic field at a distance on its axis from the centre is .
Choose an option
Show full solutionCorrect option: B
Correct answer
B2
Step-by-step explanation
The magnetic field at the center of a circular loop is T.
On the axis at distance from center: .
At : .
The ratio: .
Therefore: T.
On the axis at distance from center: .
At : .
The ratio: .
Therefore: T.
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This is a previous-year question from JEE Main 2026, 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.