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Saturday, 31 October

JEE Main 2024 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 27 January 2024, Shift 1, Physics Q43

Question 43 of 90 in this shift, Physics question 13 of 30, Section A.

A rectangular loop of length 2.5 m and width 2 m is placed at 60° to a magnetic field of 4 T. The loop is removed from the field in 10 s. The average emf induced in the loop during this time is :
  1. (1)−1-1 V
  2. (2)+1+1 VOfficial answer
  3. (3)−2-2 V
  4. (4)+2+2 V

Official answer

Option 2

NTA final key.

Same topic in other shifts

All Faraday's Law questions
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  2. 5 Apr 2026, Shift 2 · Q36A metal rod of length LL rotates about one end at origin with a uniform angular velocity ω\omega. The magnetic field radially falls off…HardSingle correct
  3. 5 Apr 2026, Shift 2 · Q50A circular loop of radius 20 cm and resistance 2 Ω\Omega is placed in a time varying magnetic field B⃗=(2t2+2t+3) T\vec{B}=(2t^2+2t+3)\ \mathrm{T}. At…EasyNumerical value
  4. 6 Apr 2026, Shift 2 · Q39A square loop of side 2 cm is placed in a time varying magnetic field with magnitude as B=0.4sin⁡(300t)B=0.4\sin(300t) Tesla. The normal to the plane…MediumSingle correct
  5. 4 Apr 2024, Shift 2 · Q53A rod of length 60 cmcm rotates with a uniform angular velocity 20 rad s−1s^{-1} about its perpendicular bisector, in a uniform magnetic…MediumNumerical value
  6. 8 Apr 2024, Shift 1 · Q60A square loop PQRS having 10 turns, area 3.6×10−3 m23.6\times10^{-3}\ \mathrm{m^2} and resistance 100 Ω100\ \Omega is slowly and uniformly being…MediumNumerical valueHas a figure

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.