JEE Main 2012 — Electromagnetic Induction Question with Solution
JEE Main 2012 (Offline)
Question
A coil is suspended in a uniform magnetic field, with the plane of the coil parallel to the magnetic lines of force. When a current is passed through the coil it starts oscillating; it is very difficult to stop. But if an aluminium plate is placed near to the coil, it stops. This is due to :
Choose an option
Show full solutionCorrect option: D
Correct answer
Delectromagnetic induction in the aluminium plate giving rise to electromagnetic damping.
Step-by-step explanation
Oscillating coil produces time variable magnetic field. It cause eddy current in the aluminium plate which causes anti-torque on the coil, due to which is stops.
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This is a previous-year question from JEE Main 2012, covering the Electromagnetic Induction 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.