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Physics - Magnetic Effects of Current

Practise 276 JEE Main previous year questions on Magnetic Effects of Current, compiled from papers spanning 2002 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 JEE Main tests.

Magnetic Effects of Current has been asked in 25 of the 25 years of JEE Main papers analysed (2002–2026), with 276 questions in all. 33% of them were easy, 43% moderate and 24% tough. Most of its questions came from 2023, with 35 questions that year. In the last three years (2024–2026) it had 62 questions across 49 papers, about 1.3 per paper.

The chapter's 6 topics are not weighted equally: Magnetic Field (90 questions, 33%), Motion of Charged Particle in Magnetic Field (80 questions, 29%), and Force and Torque on Current Carrying Conductor (58 questions, 21%) have been asked the most. Magnetic Field has also led over the last five years, with 48 questions. Magnetic Field has produced the most tough questions (25).

  1. 1A current carrying circular loop of radius cm with unit normal is placed in a magnetic field, . If T and current A, the torque experienced b08 Apr, 2026 (E)Force and Torque on Current Carrying Conductor
  2. 2A mg particle carrying a charge of C is moving with velocity of m/s in a region having magnetic field Wb/m . It moves a distance of meter al08 Apr, 2026 (E)Motion of Charged Particle in Magnetic Field
  3. 3A small cube of side mm is placed at the centre of a circular loop of radius cm carrying a current of A. The magnetic energy stored inside t06 Apr, 2026 (M)Magnetic Field
  4. 4A current of A each flows in opposite directions in two conducting wires, placed parallel to each other at a distance of cm. The magnetic fi06 Apr, 2026 (E)Magnetic Field
  5. 5The charged particle moving in a uniform magnetic field of T has an acceleration m/s . The value of is __________.05 Apr, 2026 (M)Motion of Charged Particle in Magnetic Field
  6. 6An insulated wire is wound so that it forms a flat coil with turns. The radius of the innermost turn is cm, and of the outermost turn cm. If04 Apr, 2026 (M)Magnetic Moment
  7. 7A circular coil of radius cm and turns carries a current of A. The coil is placed in a uniform magnetic field of magnitude T. The axis of th04 Apr, 2026 (E)Force and Torque on Current Carrying Conductor
  8. 8Two identical long current carrying wires are bent into the shapes shown in the following figures. If the magnitude of magnetic fields at th02 Apr, 2026 (M)Biot-Savart’s Law and Ampere’s Circuital Law
  9. 9C charge moving with velocity m/s in the region of magnetic field T. The magnitude of force acting on it is N. The value of is _______.02 Apr, 2026 (M)Motion of Charged Particle in Magnetic Field
  10. 10A particle having charge C moving in - plane in fields of N/C and T experiences a force of N. The velocity of the particle at that instant i02 Apr, 2026 (E)Motion of Charged Particle in Magnetic Field
  11. 11Three long straight wires carrying current are arranged mutually parallel as shown in the figure. The force experienced by 15 cm length of w28 Jan, 2026 (M)Force and Torque on Current Carrying Conductor
  12. 12The magnetic field at the centre of a current carrying circular loop of radius is . The magnetic field at a distance on its axis from the ce28 Jan, 2026 (M)Magnetic Field
  13. 13A long cylindrical conductor with large cross section carries an electric current distributed uniformly over its cross-section. Magnetic fie28 Jan, 2026 (E)Magnetic Field
  14. 14A short bar magnet placed with its axis at with an external field of 800 Gauss, experiences a torque of . The work done in moving it from mo24 Jan, 2026 (M)Magnetic Dipole
  15. 15Two identical circular loops and each of radius are lying in parallel planes such that they have common axis. The current through and are an24 Jan, 2026 (E)Magnetic Field
  16. 16The current passing through a conducting loop in the form of equilateral triangle of side is 2 A. The magnetic field at its centroid is . Th23 Jan, 2026 (E)Magnetic Field
  17. 17A current carrying solenoid is placed vertically and a particle of mass with charge is released from rest. The particle moves along the axis21 Jan, 2026 (M)Motion of Charged Particle in Magnetic Field
  18. 18An infinitely long straight wire carrying current is bent in a planer shape as shown in the diagram. The radius of the circular part is . Th21 Jan, 2026 (E)Magnetic Field
  19. 19Figure shows a current carrying square loop ABCD of edge length is ' ' lying in a plane. If the resistance of the part is and that of part i08 Apr, 2025 (E)Magnetic Field
  20. 20A particle of charge , mass and kinetic energy E enters in magnetic field perpendicular to its velocity and undergoes a circular arc of radi07 Apr, 2025 (M)Motion of Charged Particle in Magnetic Field
  21. 21Uniform magnetic fields of different strengths and ), both normal to the plane of the paper exist as shown in the figure. A charged particle07 Apr, 2025 (M)Motion of Charged Particle in Magnetic Field
  22. 22A particle of charge and mass is present in a strong magnetic field of 6.28 T. The particle is then fired perpendicular to magnetic field. T04 Apr, 2025 (E)Motion of Charged Particle in Magnetic Field
  23. 23A 4.0 cm long straight wire carrying a current of 8A is placed perpendicular to an uniform magnetic field of strength 0.15 T. The magnetic f03 Apr, 2025 (M)Force and Torque on Current Carrying Conductor
  24. 24A loop ABCDA , carrying current , is placed in a plane, consists of two semi-circular segments of radius and . The magnitude of the resultan03 Apr, 2025 (M)Magnetic Field
  25. 25Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R . Assertion A: . If oxygen ion and Hydr03 Apr, 2025 (E)Motion of Charged Particle in Magnetic Field
  26. 26A magnetic dipole experiences a torque of when placed in uniform magnetic field in such a way that dipole moment makes angle of with magneti03 Apr, 2025 (E)Magnetic Dipole
  27. 27Let be the magnitude of magnetic field at center of a circular coil of radius carrying current . Let be the magnitude of magnetic field at a02 Apr, 2025 (M)Magnetic Field
  28. 28In a moving coil galvanometer, two moving coils and have the following particulars : Assuming that torsional constant of the springs are sam02 Apr, 2025 (E)Force and Torque on Current Carrying Conductor
  29. 29Consider a long straight wire of a circular cross-section (radius a) carrying a steady current I. The current is uniformly distributed acros29 Jan, 2025 (M)Magnetic Field
  30. 30The magnetic field inside a 200 turns solenoid of radius 10 cm is . If the solenoid carries a current of 0.29 A , then the length of the sol29 Jan, 2025 (E)Magnetic Field
  31. 31Consider a long thin conducting wire carrying a uniform current I. A particle having mass " M " and charge " " is released at a distance " "28 Jan, 2025 (M)Motion of Charged Particle in Magnetic Field
  32. 32An infinite wire has a circular bend of radius a, and carrying a current I as shown in figure. The magnitude of magnetic field at the origin28 Jan, 2025 (E)Magnetic Field
  33. 33A current of 5A exists in a square loop of side . Then the magnitude of the magnetic field at the centre of the square loop will be . where,24 Jan, 2025 (M)Magnetic Field
  34. 34A long straight wire of a circular cross-section with radius ' ' carries a steady current . The current I is uniformly distributed across th24 Jan, 2025 (E)Magnetic Field
  35. 35N equally spaced charges each of value q , are placed on a circle of radius R . The circle rotates about its axis with an angular velocity a24 Jan, 2025 (E)Biot-Savart’s Law and Ampere’s Circuital Law
  36. 36Given below are two statements. One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : A electron in a ce24 Jan, 2025 (E)Motion of Charged Particle in Magnetic Field
  37. 37A tightly wound long solenoid carries a current of 1.5 A . An electron is executing uniform circular motion inside the solenoid with a time 24 Jan, 2025 (E)Force and Torque on Current Carrying Conductor
  38. 38Consider a moving coil galvanomenter (MCG): A. The torsional constant in moving coil galvanometer has dimentions B. Increasing the current s23 Jan, 2025 (M)Force and Torque on Current Carrying Conductor
  39. 39An electron projected perpendicular to a uniform magnetic field B moves in a circle. If Bohr's quantization is applicable, then the radius o22 Jan, 2025 (E)Motion of Charged Particle in Magnetic Field
  40. 40A proton is moving undeflected in a region of crossed electric and magnetic fields at a constant speed of . When the electric field is switc22 Jan, 2025 (E)Motion of Charged Particle in Magnetic Field
  41. 41Two long parallel wires and , separated by a distance of 6 cm , carry currents of 5A and 4A, respectively, in opposite directions as shown i22 Jan, 2025 (E)Force and Torque on Current Carrying Conductor
  42. 42Given below are two statements : Statement (I) : When currents vary with time, Newton's third law is valid only if momentum carried by the e09 Apr, 2024 (M)Biot-Savart’s Law and Ampere’s Circuital Law
  43. 43A square loop of edge length carrying current of is placed with its edges parallel to the axis. A magnetic field is passing through the plan09 Apr, 2024 (M)Force and Torque on Current Carrying Conductor
  44. 44A proton and a deutron ( having same kinetic energies enter a region of uniform magnetic field , moving perpendicular to . The ratio of the 09 Apr, 2024 (E)Motion of Charged Particle in Magnetic Field
  45. 45A straight magnetic strip has a magnetic moment of . If the strip is bent in a semicircular shape, its magnetic moment will be _______ . (gi09 Apr, 2024 (E)Magnetic Moment
  46. 46An electron with kinetic energy enters a region of uniform magnetic field of 3 perpendicular to its direction. An electric field is applied 08 Apr, 2024 (M)Motion of Charged Particle in Magnetic Field
  47. 47A long straight wire of radius a carries a steady current I. The current is uniformly distributed across its cross section. The ratio of the08 Apr, 2024 (E)Magnetic Field
  48. 48An element is placed at the origin and carries a large current . The magnetic field on the -axis at a distance of from the elements of lengt06 Apr, 2024 (M)Biot-Savart’s Law and Ampere’s Circuital Law
  49. 49A circular coil having 200 turns, area and carrying current is placed in a uniform magnetic field of 1T. Initially the magnetic dipole momen06 Apr, 2024 (M)Magnetic Moment
  50. 50A coil having 100 turns, area of , carrying current of is placed in uniform magnetic field of such a way that plane of coil is perpendicular06 Apr, 2024 (E)Magnetic Moment

Frequently Asked Questions

1.How many questions are available for Magnetic Effects of Current?

This chapter includes 276 questions compiled from JEE Main papers spanning 2002 to 2026.

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

These are JEE Main questions specifically for the Magnetic Effects of Current chapter. Questions from other exams like NTA Abhyas (JEE Main) or JEE Advanced are organised separately under their respective exam sections.

3.Is Magnetic Effects of Current an important chapter for JEE Main Physics?

Magnetic Effects of Current has appeared in 25 of the 25 years of JEE Main papers covered here, with 276 questions across 173 papers - about 2 per paper it appears in.

4.What is the difficulty level of Magnetic Effects of Current questions in JEE Main?

Of the 276 questions analysed for this chapter, 33% are easy, 43% moderate and 24% tough. 2023 had the most, with 35 questions.

5.Which topics in Magnetic Effects of Current should I focus on?

These topics have carried the most weightage in Magnetic Effects of Current:

  • Magnetic Field - 90 questions (33%)
  • Motion of Charged Particle in Magnetic Field - 80 questions (29%)
  • Force and Torque on Current Carrying Conductor - 58 questions (21%)
  • Magnetic Field has produced the most tough questions (25).
6.Is Magnetic Effects of Current's weightage in JEE Main going up or down?

Across all 173 papers analysed, Magnetic Effects of Current has averaged about 1.6 questions per paper. In the last three years (2024–2026), that average has fallen, at about 1.3 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.