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Physics - Electromagnetic Induction

Practise 43 COMEDK previous year questions on Electromagnetic Induction, compiled from papers spanning 2012 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty COMEDK tests.

Electromagnetic Induction has been asked in 13 of the 15 years of COMEDK papers analysed (2012–2026), with 43 questions in all. 44% of them were easy, 47% moderate and 9% tough. Most of its questions came from 2024, with 9 questions that year. In the last three years (2024–2026) it had 21 questions across 9 papers, about 2.3 per paper.

The chapter's 5 topics are not weighted equally: Magnetic Flux, Faraday's and Lenz law (16 questions, 37%), Self and Mutual Inductance (12 questions, 28%), and Motional and Rotational EMF (11 questions, 26%) have been asked the most. Magnetic Flux, Faraday's and Lenz law has also led over the last five years, with 10 questions. Magnetic Flux, Faraday's and Lenz law has produced the most tough questions (2).

  1. 1A square loop of wire 2.2 cm on each side contains 2 turns and has a total resistance of . It is located 22 cm from a long straight current 09 May, 2026 (S1)Magnetic Flux, Faraday's and Lenz law
  2. 2A circular coil of radius 7 cm and 40 turns is rotated about its vertical diameter with an angular speed of 40 radians per second in a unifo09 May, 2026 (S1)Motional and Rotational EMF
  3. 3An AC generator having 400 turns and an area of cross section of rotates with an angular speed of in a uniform magnetic field of strength 0.09 May, 2026 (S1)Motional and Rotational EMF
  4. 4A metallic circular loop is placed with its plane perpendicular to a uniform magnetic field of 0.3 T. If the radius of the loop decreases at09 May, 2026 (S2)Magnetic Flux, Faraday's and Lenz law
  5. 5A rectangular loop of resistance is placed in a uniform magnetic field such that the magnetic flux through the loop increases according to t25 May, 2025 (Shift)Magnetic Flux, Faraday's and Lenz law
  6. 6In an AC generator, a rectangular coil having 400 turns, each having an area of is rotated in a uniform magnetic field of magnitude 4 T . If25 May, 2025 (Shift)Motional and Rotational EMF
  7. 7When current in an inductance is changed at a uniform rate from 15 A to 30 A in 3 s, the self-induced emf in the coil is 25 V. The change in25 May, 2025 (Shift)Self and Mutual Inductance
  8. 8A long solenoid has 400 turns. When a current of 100 A is passed through it, the resulting magnetic flux linked with each turn of the soleno10 May, 2025 (S1)Self and Mutual Inductance
  9. 9The magnetic flux through a stationary loop of wire having a resistance R varies with time as . The average emf and total charge flowing in 10 May, 2025 (S1)Magnetic Flux, Faraday's and Lenz law
  10. 10A circular coil of area and resistance is arranged vertically in the east -west direction. A uniform magnetic field 0.2 T is set up across t10 May, 2025 (S2)Magnetic Flux, Faraday's and Lenz law
  11. 11A current of 2 A is passed through the primary coil. The total flux linked with the secondary coil, which is closely wound over the primary 10 May, 2025 (S2)Self and Mutual Inductance
  12. 12A rectangular coil of 250 turns has an average area of . The coil rotates with a speed of 60 cycles per second in a uniform magnetic field o10 May, 2025 (S3)Motional and Rotational EMF
  13. 13In an inductor of self-inductance , current changes with time (in sec) according to the relation, . The emf becomes zero at2024 (Afternoon Shift)Self and Mutual Inductance
  14. 14A wire ' ' m long bent into a circular loop is placed perpendicular to the magnetic field of flux density . Within 0.1sec, the loop is chang2024 (Afternoon Shift)Magnetic Flux, Faraday's and Lenz law
  15. 15A metallic rod of length ' ' is rotated with an angular frequency of about an axis normal to the rod passing through its one end. A constant2024 (Afternoon Shift)Motional and Rotational EMF
  16. 16The current in a coil changes steadily from to in when an emf of is induced in it. The self-inductance of the coil is2024 (Evening Shift)Self and Mutual Inductance
  17. 17A conducting circular loop is placed in a uniform magnetic field with its plane perpendicular to the loop. If the radius of the loop is made2024 (Evening Shift)Magnetic Flux, Faraday's and Lenz law
  18. 18The magnetic flux linked with a coil is given by the equation: . The e.m.f. induced in the coil at seconds will be:2024 (Evening Shift)Magnetic Flux, Faraday's and Lenz law
  19. 19Select the unit of the coefficient of mutual induction from the following.2024 (Morning Shift)Self and Mutual Inductance
  20. 20Around the central part of an air cored solenoid of length and area of cross section and 3000 turns, another coil of 250 turns is closely wo2024 (Morning Shift)Self and Mutual Inductance
  21. 21A metallic rod of length is rotated with a frequency about an axis passing through the centre of the circular ring of radius . A constant ma2024 (Morning Shift)Motional and Rotational EMF
  22. 22A metallic rod of is rotated with a frequency 100 revolution per second about an axis perpendicular to its length and passing through its on2023 (Evening Shift)Motional and Rotational EMF
  23. 23One volt induced emf is produced in the secondary coil when the current through the primary coil is changed from to in 100 milliseconds. the2023 (Evening Shift)Self and Mutual Inductance
  24. 24The magnetic flux linked with a coil satisfies the relation , where is time in second. The emf induced in the coil at is2023 (Memory Based)Magnetic Flux, Faraday's and Lenz law
  25. 25The magnetic flux linked with a coil satisfies the relation , where is time in second. The emf induced in the coil at is2023 (Morning Shift)Magnetic Flux, Faraday's and Lenz law
  26. 26A constant current flows from to as shown in the figure. What is the direction of current in the circle?2021Magnetic Flux, Faraday's and Lenz law
  27. 27A coil of wire of a certain radius has 100 turns and a self inductance of . The self inductance of a second similar coil of 500 turns will b2020Self and Mutual Inductance
  28. 28A coil of 100 turns carries a current of and creates a magnetic flux of . The inductance2020Inductance
  29. 29A magnet is suspended from a spring and while it oscillates, the magnet moves in and out of the coil . The coil is connected to a galvanomet2019Induced Electric Field
  30. 30A rectangular coil of 300 turns has an average area of . The coil rotates with a speed of 50 cps in a uniform magnetic field of strength abo2019Motional and Rotational EMF
  31. 31A vertical circular coil of radius and having 10 turns carries a steady current. When the plane of the coil is normal to the magnetic meridi2019Magnetic Flux, Faraday's and Lenz law
  32. 32Two similar circular loops carry equal currents in the same direction. On moving the coils further apart, the electric current will2018Induced Electric Field
  33. 33The induction coil works on the principle of2017Self and Mutual Inductance
  34. 34A bicycle generator crcates at . The cmf generated at is2015Motional and Rotational EMF
  35. 35If a change in current of in one coil produces a change in magnetic flux of weber in another coil, then the mutual inductance between coils 2014Self and Mutual Inductance
  36. 36An aeroplane is flying horizontally with a velocity of . The distance between the tips of the wings of the aeroplane is . The vertical compo2014Motional and Rotational EMF
  37. 37The inductance in a coil plays the same role as2014Inductance
  38. 38The mutual inductance between two coils depends upon2014Self and Mutual Inductance
  39. 39The normal magnetic flux passing through a coil changes with time according to the equation . What is the magnitude of the induced current a2014Magnetic Flux, Faraday's and Lenz law
  40. 40A magnet is suspended from a spring and when it oscillates, the magnet moves in and out of the coil . The coil is connected to a galvanomete2013Magnetic Flux, Faraday's and Lenz law
  41. 41A rectangular coil of turns has an average area of . The coil rotates with a speed of in uniform magnetic field of strength about an axis pe2013Motional and Rotational EMF
  42. 42According to Faraday's law of electromagnetic induction an emf is induced in a coil, if2012Magnetic Flux, Faraday's and Lenz law
  43. 43The current in a coil changes from to in secon(d) If the coefficient of self-induction of the coil is , then the magnitude of the self-induc2012Magnetic Flux, Faraday's and Lenz law

Frequently Asked Questions

1.How many questions are available for Electromagnetic Induction?

This chapter includes 43 questions compiled from COMEDK papers spanning 2012 to 2026.

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

These are COMEDK 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 COMEDK Physics?

Electromagnetic Induction has appeared in 13 of the 15 years of COMEDK papers covered here, with 43 questions across 21 papers - about 2 per paper it appears in.

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

Of the 43 questions analysed for this chapter, 44% are easy, 47% moderate and 9% tough. 2024 had the most, with 9 questions.

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

These topics have carried the most weightage in Electromagnetic Induction:

  • Magnetic Flux, Faraday's and Lenz law - 16 questions (37%)
  • Self and Mutual Inductance - 12 questions (28%)
  • Motional and Rotational EMF - 11 questions (26%)
  • Magnetic Flux, Faraday's and Lenz law has produced the most tough questions (2).
6.Is Electromagnetic Induction's weightage in COMEDK going up or down?

Across all 21 papers analysed, Electromagnetic Induction has averaged about 2.0 questions per paper. In the last three years (2024–2026), that average has stayed about the same, at about 2.3 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.