JEE Main 2017PhysicsElectromagnetic InductionMediumMCQ

JEE Main 2017 — Electromagnetic Induction Question with Solution

JEE Main 2017 (02 Apr)

Question

In a coil of resistance 100 Ω, a current is induced by changing the magnetic flux through it as shown in the figure. The magnitude of change in flux through the coil is:

Choose an option

Show full solutionCorrect option: D
Correct answer
D250 Wb

Step-by-step explanation

Emf=iR⇒-dϕdt=iR

∫-dϕ=∫(idt)R

q=ΔϕR= Area under i-t graph

⇒∆ϕ=12×10×0.5×100=250 Wb

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About this question

This is a previous-year question from JEE Main 2017, 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.