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Physics - Magnetic Effects of Current

Practise 63 AIIMS previous year questions on Magnetic Effects of Current, compiled from papers spanning 2001 to 2019. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty AIIMS tests.

Magnetic Effects of Current has been asked in 18 of the 19 years of AIIMS papers analysed (2001–2019), with 63 questions in all. 44% of them were easy, 43% moderate and 13% tough. Most of its questions came from 2019, with 9 questions that year. In the last three years (2017–2019) it had 16 questions across 5 papers, about 3.2 per paper.

The chapter's 6 topics are not weighted equally: Motion of Charged Particle in Magnetic Field (24 questions, 38%), Magnetic Field (14 questions, 22%), and Force and Torque on Current Carrying Conductor (10 questions, 16%) have been asked the most. Magnetic Field has produced the most tough questions (3).

  1. 1Find force per unit length at .26 May, 2019Magnetic Field
  2. 2A proton of velocity enters a field of magnetic induction tesla. The acceleration produced in the proton in is (Specific charge of proton )26 May, 2019Motion of Charged Particle in Magnetic Field
  3. 3Force on a current carrying closed loop (Radius ) in a uniform magnetic field which is at an angle with the normal will be26 May, 2019Force and Torque on Current Carrying Conductor
  4. 4The magnetic field inside a long solenoid having turns per unit length and carrying current when iron core is kept in it is ( permeability o26 May, 2019Magnetic Field
  5. 5Assertion : A charge particle is released from rest in a magnetic field then it will move in circular path. Reason : Work done by a magnetic26 May, 2019Motion of Charged Particle in Magnetic Field
  6. 6Two parallel infinitely long current carrying wires are shown in figure. If resultant magnetic field at point is zero. Then determine curren25 May, 2019Magnetic Field
  7. 7A particle of mass and charge moves with a constant velocity along the positive -direction. It enters a region containing a uniform magnetic25 May, 2019Motion of Charged Particle in Magnetic Field
  8. 8A semicircular arc of radius and a straight wire along the diameter, both are carrying same current . Find out magnetic force per unit lengt25 May, 2019Force and Torque on Current Carrying Conductor
  9. 9A proton is projected with velocity in a region where magnetic field and electric field . Then find out the net acceleration of proton25 May, 2019Motion of Charged Particle in Magnetic Field
  10. 10In the cyclotron, as radius of the circular path of the charged particle increases angular velocity, linear velocity)27 May, 2018Motion of Charged Particle in Magnetic Field
  11. 11Assertion : When radius of a circular loop carrying current is doubled, its magnetic moment becomes four times. Reason : Magnetic moment dep27 May, 2018Magnetic Moment
  12. 12A long cylindrical wire carrying current of 10 A. has radius of , then find its magnetic field induction at a point from the centre of the w26 May, 2018Magnetic Field
  13. 13Two magnets are suspended by a given wire one by one. In order to deflect the first magnet through , the wire has to be twisted through wher26 May, 2018Magnetic Moment
  14. 14Assertion : Magnetic field can not change kinetic energy of a moving charge. Reason : Magnetic field can not change velocity vector.26 May, 2018Motion of Charged Particle in Magnetic Field
  15. 15A current is flowing through the loop. The direction of the current and the shape of the loop are as shown in the figure. The magnetic field2017Magnetic Field
  16. 16A square loop , carrying a current , is placed near and coplanar with a long straight conductor carrying a current , as shown in figure. The2017Force and Torque on Current Carrying Conductor
  17. 17The magnetic field at the centre of the arc shown in the figure is2016Magnetic Field
  18. 18The force per unit length between two straight conductors separated by a distance of is . The current in one conductor is and that in the ot2015Force and Torque on Current Carrying Conductor
  19. 19What is the magnetic field on the axis of a coil of radius carrying current at a distance from the origin?2015Biot-Savart’s Law and Ampere’s Circuital Law
  20. 20Assertion : When a magnetic dipole is placed in a non uniform magnetic field, only a torque acts on the dipole. Reason : Force would act on 2015Magnetic Dipole
  21. 21Two parallel long wires and carry currents and . When and are in the same direction, the magnetic field at a point mid way between the wires2014Force and Torque on Current Carrying Conductor
  22. 22A long straight wire carries 10 A d.c. current an electron travels perpendicular to the plane of this wire at a distance with velocity . For2014Motion of Charged Particle in Magnetic Field
  23. 23A particle of charge and mass starts moving from the origin under the action of an electric field and with a velocity . The speed of the par2014Motion of Charged Particle in Magnetic Field
  24. 24Relation between magnetic moment and angular velocity is2013Magnetic Moment
  25. 25Assertion : Magnetic lines forms closed loops in nature. Reason : Mono-magnetic pole does not exist in nature.2013Magnetic Dipole
  26. 26Assertion : Magnetic field is useful in producing parallel beam of charged particle. Reason : Magnetic field inhibits the motion of charged 2013Motion of Charged Particle in Magnetic Field
  27. 27A wire of mass , length and current is balanced in mid air by a magnetic field , then find the value of .2012Force and Torque on Current Carrying Conductor
  28. 28A toroid with mean radius , diameter have turns carrying current . What is the magnetic field inside the toroid?2012Magnetic Field
  29. 29The minimum magnetic dipole moment of electron in hydrogen atom is2012Magnetic Dipole
  30. 30Two wires carrying2012Force and Torque on Current Carrying Conductor
  31. 31Assertion : Magnetic force is always perpendicular to the magnetic field. Reason : Electric force is along the direction of electric field.2012Motion of Charged Particle in Magnetic Field
  32. 32Assertion : A planar circular loop of area and carrying current is equivalent to magnetic dipole of dipole moment . Reason : At large distan2012Magnetic Dipole
  33. 33Assertion : A charged particle can be accelerated in a cyclotron by the alternate distribution of the field. Reason : Energy of charged part2012Motion of Charged Particle in Magnetic Field
  34. 34A proton travels few distance in an electric field, then it enters a crossed magnetic field of and radius , find the velocity of proton.2011Motion of Charged Particle in Magnetic Field
  35. 35When orientation of dipoles parallel and antiparallel to magnetic field is distributed unequally, then the material is2011Magnetic Dipole
  36. 36Magnetic field at distance a from long current carrying wire is proportional to2011Magnetic Field
  37. 37When a positively charged particle enters into a uniform magnetic field with uniform velocity, its trajectory can be (i) a straight line (ii2011Motion of Charged Particle in Magnetic Field
  38. 38Assertion : Magnetic field lines are continuous and closed. Reason : Magnetic monopole does not exist.2011Magnetic Dipole
  39. 39An uncharged particle is moving with a velocity of in non-uniform magnetic field as shown. Velocity would be2010Motion of Charged Particle in Magnetic Field
  40. 40Assertion : If a proton and an a-particle enter a uniform magnetic field perpendicularly with the same speed, the time period of revolution 2010Motion of Charged Particle in Magnetic Field
  41. 41What is ratio of Bohr magneton to the nuclear magneton?2009Magnetic Moment
  42. 42A current carrying wire is placed near another long wire carrying current . If wire is free to move, it will have2009Force and Torque on Current Carrying Conductor
  43. 43Assertion : A charge, whether stationary or in motion produces a magnetic field around it. Reason : Moving charges produce only electric fie2009Motion of Charged Particle in Magnetic Field
  44. 44Two changes \(+q\) and \(-q\) are attached to the two ends of a light rod of length \(L\), as shown in figure. The system is given a velocit2008Motion of Charged Particle in Magnetic Field
  45. 45The ratio of magnetic fields on the axis of a circular current carrying coil of radius \(a\) to the magnetic field at its centre will be2008Magnetic Field
  46. 46Assertion : When radius of circular loop carrying current is doubled, its magnetic moment becomes four times. Reason : Magnetic moment depen2008Magnetic Moment
  47. 47Assertion : The energy of charged particle moving in a uniform magnetic field does not change. Reason : Work done by magnetic field on the c2008Motion of Charged Particle in Magnetic Field
  48. 48What is the magnetic field at a distance \(R\) from a coil of radius \(r\) carrying current \(I\) ?2007Biot-Savart’s Law and Ampere’s Circuital Law
  49. 49In the following diagram, which particle has highest \(e / m\) value?2007Motion of Charged Particle in Magnetic Field
  50. 50Circular loop of a wire and a long straight wire carry currents and respectively as shown in figure. Assuming that these are placed in the s2006Magnetic Field

Frequently Asked Questions

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

This chapter includes 63 questions compiled from AIIMS papers spanning 2001 to 2019.

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

These are AIIMS questions specifically for the Magnetic Effects of Current chapter. Questions from other exams like NEET or JIPMER are organised separately under their respective exam sections.

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

Magnetic Effects of Current has appeared in 18 of the 19 years of AIIMS papers covered here, with 63 questions across 20 papers - about 3 per paper it appears in.

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

Of the 63 questions analysed for this chapter, 44% are easy, 43% moderate and 13% tough. 2019 had the most, with 9 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:

  • Motion of Charged Particle in Magnetic Field - 24 questions (38%)
  • Magnetic Field - 14 questions (22%)
  • Force and Torque on Current Carrying Conductor - 10 questions (16%)
  • Magnetic Field has produced the most tough questions (3).
6.Is Magnetic Effects of Current's weightage in AIIMS going up or down?

Across all 20 papers analysed, Magnetic Effects of Current has averaged about 3.1 questions per paper. In the last three years (2017–2019), that average has stayed about the same, at about 3.2 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.