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Friday, 9 October

JEE Main 2020 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 2 September 2020, Shift 1, Physics Q24

Question 24 of 75 in this shift, Physics question 24 of 25.

A circular coil of radius 10 cm is placed in a uniform magnetic field of 3.0×10−53.0\times10^{-5} T with its plane perpendicular to the field initially. It is rotated at constant angular speed about an axis along the diameter of coil and perpendicular to magnetic field so that it undergoes half of rotation in 0.2s. The maximum value of EMF induced (in μ\muV) in the coil will be close to the integer ______.

Official answer

15.00

NTA final key (Sep 2020).

Chapter
Electromagnetic Induction
Topic
Faraday's Law
Idea tested
AC Generator Principle

Same topic in other shifts

All Faraday's Law questions
  1. 2 Apr 2026, Shift 1 · Q38When a coil is placed in a time dependent magnetic field the power dissipated in it is PP. The number of turns, area of the coil and…MediumSingle correct
  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. 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
  6. 9 Apr 2024, Shift 2 · Q45A square loop of side 1515 cm being moved towards right at a constant speed of 22 cm/s as shown in figure. The front edge enters the 5050…EasySingle correctHas 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 42 of the 174 JEE Main shifts held from 2017 to 2026.