JEE Main 2018 — Electromagnetic Induction Question with Solution
From: JEE Main 2018 (Online) 16th April Morning Slot
Question
A coil of cross-sectional area A having n turns is placed in a uniform magnetic field B. When it is rotated with an angular velocity the maxium e.m.f. induced in the coil will be:
Choose an option
Show full solutionCorrect option: C
Correct answer
CnBA
Step-by-step explanation
Flux in the coil, = nBA sin(t)
When n = no. of turns
A = Area of coil
= angular speed
Induced emf,
= nBA cost
emax = nBA
When n = no. of turns
A = Area of coil
= angular speed
Induced emf,
= nBA cost
emax = nBA
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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.