Jump to a section

Physics - Magnetic Effects of Current

Practise 198 AP EAMCET previous year questions on Magnetic Effects of Current, compiled from papers spanning 2001 to 2025. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty AP EAMCET tests.

Magnetic Effects of Current has been asked in 23 of the 24 years of AP EAMCET papers analysed (2001–2024), with 198 questions in all. 42% of them were easy, 43% moderate and 14% tough. Most of its questions came from 2020, with 23 questions that year. In the last three years (2022–2024) it had 60 questions across 28 papers, about 2.1 per paper.

The chapter's 6 topics are not weighted equally: Magnetic Field (74 questions, 37%), Motion of Charged Particle in Magnetic Field (44 questions, 22%), and Force and Torque on Current Carrying Conductor (30 questions, 15%) have been asked the most. Magnetic Field has also led over the last five years, with 38 questions. Magnetic Field has produced the most tough questions (11).

  1. 1If a wire of length ' ' carrying a current ' ' is bent in the shape of a semi-circular arc as shown in the figure, then the magnetic field a27 May, 2025 (M)Magnetic Field
  2. 2If a current of 15 A passes through a solenoid of length 25 cm, radius 2 cm and number of turns 500, then the magnetic moment of the solenoi26 May, 2025 (M)Magnetic Moment
  3. 3The maximum magnetic field produced by a current of 12 A passing through a copper wire of diameter 1.2 mm is26 May, 2025 (M)Biot-Savart’s Law and Ampere’s Circuital Law
  4. 4Two moving coil galvanometers A and B having identical springs are placed in magnetic fields of 0.25 T and 0.5 T respectively. If the number26 May, 2025 (M)Force and Torque on Current Carrying Conductor
  5. 5The magnetic field at the centre of a long solenoid having 400 turns per unit length and carrying a current ' ' is . The magnetic field at t26 May, 2025 (E)Magnetic Field
  6. 6If a proton of kinetic energy 8.35 MeV enters a uniform magnetic field of 10 T at right angles to the direction of the field, then the force26 May, 2025 (E)Motion of Charged Particle in Magnetic Field
  7. 7Two charged particles of specific charges in the ratio and masses in the ratio 1 : 4 moving with same kinetic energy enter a uniform magneti24 May, 2025 (M)Motion of Charged Particle in Magnetic Field
  8. 8If a charged particle enters a uniform magnetic field normally with certain velocity, then the time period of revolution of the particle23 May, 2025 (M)Motion of Charged Particle in Magnetic Field
  9. 9A long straight wire of circular cross-section of radius ' ' is carrying a steady current. The current is distributed uniformly across the c23 May, 2025 (M)Biot-Savart’s Law and Ampere’s Circuital Law
  10. 10The magnetic moment of an electron moving in a circular orbit of radius with a time period T is23 May, 2025 (E)Magnetic Moment
  11. 11A solenoid of one meter length and 3.55 cm inner diameter carries a current of 5 A. If the solenoid consists of five closely packed layers e23 May, 2025 (E)Magnetic Field
  12. 12The work done in rotating a bar magnet which is initially in the direction of a uniform magnetic field through is W. The additional work to 23 May, 2025 (E)Magnetic Dipole
  13. 13The force per unit length on a straight wire carrying current of 8 A making an angle of with a uniform magnetic field of 0.15 T is22 May, 2025 (M)Force and Torque on Current Carrying Conductor
  14. 14A wire of length 10 m carrying current of 1 A is bent in to a circular loop. If a magnetic field of is applied on the loop, then the maximum22 May, 2025 (M)Force and Torque on Current Carrying Conductor
  15. 15An alpha particle moves along a circular path of radius 0.5 mm in a magnetic field of . The de Broglie wavelength associated with the alpha 22 May, 2025 (M)Motion of Charged Particle in Magnetic Field
  16. 16In a wire of radius 1 mm, a steady current of 2 A uniformly distributed across the cross-section of the wire is flowing. Then the magnetic f22 May, 2025 (E)Biot-Savart’s Law and Ampere’s Circuital Law
  17. 17The magnetic field at the centre of a current carrying circular coil of radius is and the magnetic field at a point on its axis at a distanc22 May, 2025 (E)Magnetic Field
  18. 18A short bar magnet of magnetic moment is free to rotate in a horizontal plane. The work done in rotating the magnet slowly from the directio22 May, 2025 (E)Force and Torque on Current Carrying Conductor
  19. 19The magnetic field at a distance of 10 cm from a long straight thin wire carrying a current of 4 A is21 May, 2025 (M)Magnetic Field
  20. 20A velocity selector is to be constructed to select ions with a velocity of . If the electric field used is , then the magnetic field to be u21 May, 2025 (M)Motion of Charged Particle in Magnetic Field
  21. 21A closely wound solenoid of 1200 turns and area of cross-section carries a current. If the magnetic moment of the solenoid is , then the cur21 May, 2025 (M)Magnetic Moment
  22. 22If the magnetic field inside a solenoid is B, then the magnetic energy stored in it per unit volume is (c - speed of light in vacuum and is 21 May, 2025 (M)Magnetic Field
  23. 23If a straight current carrying wire of linear density is suspended in mid air by a uniform horizontal magnetic field of 0.5 T normal to the 21 May, 2025 (E)Force and Torque on Current Carrying Conductor
  24. 24Two concentric loops and of same radius are placed at right angles to each other. If the currents flowing through A and B are 3 A and 4 A re21 May, 2025 (E)Biot-Savart’s Law and Ampere’s Circuital Law
  25. 25A short bar magnet is placed in a uniform magnetic field of 2 T such that the axis of the magnet makes an angle of with the direction of the21 May, 2025 (E)Force and Torque on Current Carrying Conductor
  26. 26A charge ' ' is spread uniformly over an isolated ring of radius ' '. The ring is rotated about its natural axis with angular speed . The ma23 May, 2024 (M)Magnetic Moment
  27. 27Two toroids with number of turns 400 and 200 have arrange radii respectively 30 cm and 60 cm . If they carry the same current, the ratio of 22 May, 2024 (M)Magnetic Field
  28. 28Three rings, each with equal radius ' ' are placed mutually perpendicular to each other and each having centre at the origin of coordinate s22 May, 2024 (M)Magnetic Field
  29. 29Current flows in a conductor from east to west. The direction of the magnetic field at a point below the conductor is towards22 May, 2024 (E)Magnetic Field
  30. 30Two infinite length wires carry currents 8 A and 6 A respectively and are placed along X and Y axes respectively. Magnetic field at a point 22 May, 2024 (E)Magnetic Field
  31. 31A short magnet oscillates with a time period 0.1 s at a place where horizontal magnetic field is . A downward current of 18 A is established22 May, 2024 (E)Magnetic Moment
  32. 32When an electron placed in a uniform magnetic field is accelerated from rest through a potential difference , it experiences a force F . If 21 May, 2024 (M)Motion of Charged Particle in Magnetic Field
  33. 33A rectangular loop of sides 25 cm and 10 cm carrying a current of 10 A is placed with its longer side parallel to a long straight conductor 21 May, 2024 (M)Force and Torque on Current Carrying Conductor
  34. 34A proton and an alpha particle moving with energies in the ratio enter a uniform magnetic field of at right angles to the direction of magne21 May, 2024 (E)Motion of Charged Particle in Magnetic Field
  35. 35A charged particle moving along a straight line path enters a uniform magnetic field of 4 mT at right angles to the direction of the magneti21 May, 2024 (E)Motion of Charged Particle in Magnetic Field
  36. 36In hydrogen atom an electron is making around the nucleus of radius . The magnetic field induction produced at the centre of the orbit is ne20 May, 2024 (M)Magnetic Field
  37. 37Two long straight parallel conductors A and B carrying currents 4.5 A and 8 A respectively are separated by 25 cm in air. The resultant magn20 May, 2024 (E)Magnetic Field
  38. 38Two concentric thin circular rings of radii 50 cm and 40 cm , each carry a current of 3.5 A in opposite directions. If the two rings are cop20 May, 2024 (E)Magnetic Field
  39. 39At a place where the magnitude of the earth's magnetic field is , a short bar magnet is placed with its axis perpendicular to the earth's ma20 May, 2024 (E)Magnetic Moment
  40. 40A wire shaped in a regular hexagon of side 2 cm carries a current of 4A. The magnetic field at the centre of hexagon is19 May, 2024 (E)Magnetic Field
  41. 41A tightly wound coil of 200 turns and of radius 20 cm carrying current 5 A . Magnetic field at the centre of the coil is19 May, 2024 (E)Magnetic Field
  42. 42A current carrying coil experiences a torque due to a magnetic field. The value of the torque is of the maximum possible torque. The angle b18 May, 2024 (M)Force and Torque on Current Carrying Conductor
  43. 43An electron is moving with a velocity in an electric field and a magnetic field of . Then the magnitude and direction (with -axis) of the Lo18 May, 2024 (M)Motion of Charged Particle in Magnetic Field
  44. 44A magnet suspended in a uniform magnetic field is heated so as to reduce its magnetic moment by , By doing this, the time period of the magn18 May, 2024 (M)Magnetic Moment
  45. 45Among the following, Ampere's circuital law is represented by19 May, 2023 (M)Biot-Savart’s Law and Ampere’s Circuital Law
  46. 46The radius of the path of an electron moving at a speed of in a magnetic field of perpendicular to it is (mass of electron is and charge of 19 May, 2023 (M)Motion of Charged Particle in Magnetic Field
  47. 47For parallel conductors and steady currents, the results in accordance with Newton's third law are18 May, 2023 (M)Biot-Savart’s Law and Ampere’s Circuital Law
  48. 48Consider a tightly wound 100 turn coil of radius carrying a current of . The magnitude of the magnetic field at the centre of the coil is18 May, 2023 (M)Magnetic Field
  49. 49If ' ' is the magnetic moment of an electron revolving around hydrogen nucleus in an orbit of principal quantum number ' ', then18 May, 2023 (M)Magnetic Moment
  50. 50A cyclotron's oscillator frequency is . The operating magnetic field for accelerating protons is (charge of proton , mass of proton18 May, 2023 (E)Motion of Charged Particle in Magnetic Field

Frequently Asked Questions

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

This chapter includes 198 questions compiled from AP EAMCET papers spanning 2001 to 2025.

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

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

3.Is Magnetic Effects of Current an important chapter for AP EAMCET Physics?

Magnetic Effects of Current has appeared in 24 of the 25 years of AP EAMCET papers covered here, with 198 questions across 90 papers - about 2 per paper it appears in.

4.What is the difficulty level of Magnetic Effects of Current questions in AP EAMCET?

Of the 198 questions analysed for this chapter, 42% are easy, 43% moderate and 14% tough. 2020 had the most, with 23 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 - 74 questions (37%)
  • Motion of Charged Particle in Magnetic Field - 44 questions (22%)
  • Force and Torque on Current Carrying Conductor - 30 questions (15%)
  • Magnetic Field has produced the most tough questions (11).
6.Is Magnetic Effects of Current's weightage in AP EAMCET going up or down?

Across all 90 papers analysed, Magnetic Effects of Current has averaged about 2.2 questions per paper. In the last three years (2022–2024), that average has stayed about the same, at about 2.1 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.