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Saturday, 31 October

JEE Main 2023 · PhysicsMultiple choiceOtherEasyConceptual

JEE Main 6 April 2023, Shift 1, Physics Q38

Question 38 of 90 in this shift, Physics question 8 of 30, Section A.

The induced emf can be produced in a coil by A. moving the coil with uniform speed inside uniform magnetic field B. moving the coil with non uniform speed inside uniform magnetic field C. rotating the coil inside the uniform magnetic field D. changing the area of the coil inside the uniform magnetic field Choose the correct answer from the options given below:
  1. (1)A and C only
  2. (2)B and C only
  3. (3)C and D onlyOfficial answer
  4. (4)B and D only

Official answer

Option 3

NTA final key.

Chapter
Electromagnetic Induction
Topic
Faraday's Law
Idea tested
Magnetic Flux Calculation

Same idea in other shifts

Asked 3× in all
  1. 10 Apr 2023, Shift 2 · Q58A square loop of side 2.0 cm is placed inside a long solenoid that has 50 turns per centimetre and carries a sinusoidally varying current…MediumNumerical value
  2. 26 Jun 2022, Shift 1 · Q42The magnetic flux through a coil perpendicular to its plane is varying according to the relation ϕ=(5t3+4t2+2t−5)\phi=(5t^3+4t^2+2t-5) Weber. If the…EasySingle correct

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.