JEE Main 2022 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 27 July 2022, Shift 2, Physics Q54

Question 54 of 90 in this shift, Physics question 24 of 30, Section B.

A conducting circular loop is placed in X - Y plane in presence of magnetic field

\vec{B}=\left(3t^3\hat{j}+3t^2\hat{k}\right)

in SI unit. If the radius of the loop is 1 m, the induced emf in the loop, at time, t = 2 s is n

\pi

V. The value of n is ___________.

Official answer

NTA final key.

Chapter: Electromagnetic Induction
Topic: Faraday's Law
Idea tested: Faraday's Law Magnitude

Same idea in other shifts

Asked 15× in all

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11 Apr 2023, Shift 1 · Q53The magnetic field B crossing normally a square metallic plate of area 4 m $^2$ is changing with time as shown in figure. The magnitude of…EasyNumerical valueHas a figure
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25 Jul 2022, Shift 2 · Q60Magnetic flux (in weber) in a closed circuit of resistance 20 $\Omega$ varies with time t(s) as $\phi$ = 8t $^{2}$ - 9t + 5. The magnitude…EasyNumerical value
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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.