JEE Main 2018 — Electromagnetic Induction Question with Solution
From: JEE Main 2018 (Online) 15th April Evening Slot
Question
A copper rod of mass m slides under gravity on two smooth parallel rails, with separation l and set at an angle of with the horizontal. At the bottom rails are joined by a resistance R. There is a uniform magnetic field B normal to the plane of the rails, as shown in the igure. The terminal speed of the copper rod is :
This question includes a diagram. The text above accompanies the figure.
Choose an option
Show full solutionCorrect option: C
Correct answer
C
Step-by-step explanation
At terminal velocity, net force on rod =
Now,
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This is a previous-year question from JEE Main 2018, 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.