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Physics - Electromagnetic Induction

Practise 24 BITSAT previous year questions on Electromagnetic Induction, compiled from papers spanning 2009 to 2024. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty BITSAT tests.

Electromagnetic Induction has been asked in 15 of the 16 years of BITSAT papers analysed (2009–2024), with 24 questions in all. 46% of them were easy, 33% moderate and 21% tough. Most of its questions came from 2024, with 3 questions that year. In the last three years (2022–2024) it had 6 questions across 5 papers, about 1.2 per paper.

The chapter's 6 topics are not weighted equally: Induced Electric Field (7 questions, 29%), Magnetic Flux, Faraday's and Lenz law (6 questions, 25%), and Motional and Rotational EMF (4 questions, 17%) have been asked the most. Induced Electric Field has also led over the last five years, with 2 questions. Induced Electric Field has produced the most tough questions (2).

  1. 1A rectangular loop of length 2.5 m and width 2 m is placed at to a magnetic field of 4 T . The loop is removed from the field in 10 sec . Th2024 (Memory Based Paper 1)Magnetic Flux, Faraday's and Lenz law
  2. 2There are two long co-axial solenoids of same length . The inner and outer coils have radii and and number of turns per unit length and , re2024 (Memory Based Paper 2)Self and Mutual Inductance
  3. 3Inside a solenoid of radius 0.5 m , magnetic field is changing at a rate of . Acceleration of an electron placed at a distance of 0.3 m from2024 (Memory Based Paper 3)Magnetic Flux, Faraday's and Lenz law
  4. 4In an LC oscillator, if values of inductance and capacitance become twice and eight times, respectively, then the resonant frequency of osci2023 (Memory Based Paper 1)LR Circuit
  5. 5A conducting loop of radius is placed perpendicular to a uniform magnetic field of . The magnetic field is decreased to zero in at a steady 2023 (Memory Based Paper 1)Induced Electric Field
  6. 6A battery connected to a coil of resistance through a switch, drives a constant current in the circuit. The switch is opened in . The emf in2023 (Memory Based Paper 2)Induced Electric Field
  7. 7A metal disc of radius is rotated at a constant angular speed of in a plane at right angles to an external field of magnetic induction . The2021Motional and Rotational EMF
  8. 8A conducting square loop of side and resistance moves in its plane with a uniform velocity v perpendicular to one of its side. A magnetic in2020Motional and Rotational EMF
  9. 9A semicircular wire of radius r rotates in uniform magnetic field B about its diameter with angular velocity . If the total resistance of th2019Motional and Rotational EMF
  10. 10In a coil of resistance 50 , the induced current developed by changing magnetic flux through it, is shown in figure as a function of time. T2019Magnetic Flux, Faraday's and Lenz law
  11. 11Two inductors L 1 and L 2 are connected in parallel and a time varying current flows as shown in figure. The ratio ot current i 1 i 2 at any2018Inductance
  12. 12A conducting circular loop is placed in a uniform magnetic field, B = 0 . 025 T with its plane perpendicular to the loop. The radius of the 2017Induced Electric Field
  13. 13An inductor of inductance and resistors of resistance and are connected to a battery of emf as shown in the figure. The internal resistance 2016LR Circuit
  14. 14A conducting circular loop is placed in a uniform magnetic field of with its plane perpendicular to the magnetic field. The radius of the lo2016Induced Electric Field
  15. 15A conducting square loop is placed in a magnetic field with its plane perpendicular to the field. The sides of the loop start shrinking at a2015Induced Electric Field
  16. 16A coil 10 turns and a resistance of is connected in series with B.G of resistance . The coil is placed with its plane perpendicular to the d2014Induced Electric Field
  17. 17Eddy currents are produced when2013Induced Electric Field
  18. 18Two coaxial solenoids are made by winding thin insulated wire over a pipe of cross-sectional area and length If one of the solenoid has 300 2013Self and Mutual Inductance
  19. 19The ratio of secondary and primary turns of step-up transformer is If a current of 4 A is applied to the primary, the induced current in sec2013Magnetic Flux, Faraday's and Lenz law
  20. 20The laws of electromagnetic induction have been used in the construction of a2012Magnetic Flux, Faraday's and Lenz law
  21. 21A metal rod of length is rotated about one of its ends in a plane right angles to a field of inductance . If it makes 1800 revolutions/min. 2011Motional and Rotational EMF
  22. 22The back emf induced in a coil, when current changes from 1 ampere to zero in one milli-second, is 4 volts, the self inductance of the coil 2010Self and Mutual Inductance
  23. 23Two solenoids of same cross-sectional area have their lengths and number of turns in ratio of 1: 2 . The ratio of self-inductance of two sol2010Self and Mutual Inductance
  24. 24Lenz's law is a consequence of the law of conservation of2009Magnetic Flux, Faraday's and Lenz law

Frequently Asked Questions

1.How many questions are available for Electromagnetic Induction?

This chapter includes 24 questions compiled from BITSAT papers spanning 2009 to 2024.

2.Are these questions only from BITSAT, or from other exams too?

These are BITSAT questions specifically for the Electromagnetic Induction chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

3.Is Electromagnetic Induction an important chapter for BITSAT Physics?

Electromagnetic Induction has appeared in 15 of the 16 years of BITSAT papers covered here, with 24 questions across 18 papers - about one per paper it appears in.

4.What is the difficulty level of Electromagnetic Induction questions in BITSAT?

Of the 24 questions analysed for this chapter, 46% are easy, 33% moderate and 21% tough. 2024 had the most, with 3 questions.

5.Which topics in Electromagnetic Induction should I focus on?

These topics have carried the most weightage in Electromagnetic Induction:

  • Induced Electric Field - 7 questions (29%)
  • Magnetic Flux, Faraday's and Lenz law - 6 questions (25%)
  • Motional and Rotational EMF - 4 questions (17%)
  • Induced Electric Field has produced the most tough questions (2).
6.Is Electromagnetic Induction's weightage in BITSAT going up or down?

Across all 18 papers analysed, Electromagnetic Induction has averaged about 1.3 questions per paper. In the last three years (2022–2024), that average has stayed about the same, at about 1.2 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.