PYQ Vault
EbooksTutor

Moving Charges and Magnetism

JEE Mains Physics. Try each one first, then open its answer.

Top 10 JEE Mains PYQs to practise first

The questions and kinds of question asked most often come first. Each one says how often and in which papers.

  1. Question 1

    This type asked 10 times: 2021 Paper 10, 2021 Paper 11, 2021 Paper 20, 14 Jun 2022, 27 Jun 2022, 29 Jun 2022, 25 Jul 2022, 29 Jan 2024, 9 Apr 2024, 7 Apr 2025. This one: 7 Apr 2025 See all 10 of this type

    17
    A particle of charge qq, mass mm and kinetic energy EE enters in magnetic field perpendicular to its velocity and undergoes a circular arc of radius(r). Which of the following curves represents the variation of rr with EE ?

    Tap an option to check your answer.

  2. Question 2

    This type asked 8 times: 2021 Paper 8, 1 Feb 2023, 10 Apr 2023, 27 Jan 2024, 28 Jan 2025, 3 Apr 2025, 21 Jan 2026 S2, 2 Apr 2026 S1. This one: 2 Apr 2026 S1 See all 8 of this type

    14
    Two identical long current carrying wires are bent into the shapes shown in the following figures. If the magnitude of magnetic fields at the centers P and Q of a semicircular arc are B1B_{1} and B2B_{2} respectively, then the ratio B1 B2\frac{B_{1}}{{\text{ }B}_{2}} is ____\_\_\_\_ . (I) (II)

    Tap an option to check your answer.

  3. Question 3

    This type asked 8 times: 2021 Paper 17, 25 Jun 2022, 28 Jun 2022, 6 Apr 2023, 8 Apr 2024, 24 Jan 2025, 29 Jan 2025, 28 Jan 2026 S2. This one: 28 Jan 2026 S2 See all 8 of this type

    14
    A long cylindrical conductor with large cross section carries an electric current distributed uniformly over its cross-section. Magnetic field due to this current is : (A) maximum at either ends of the conductor and minimum at the midpoint (B) maximum at the axis of the conductor (C) minimum at the surface of the conductor (D) minimum at the axis of the conductor (E) same at all points in the cross-section of the conductor Choose the correct answer from the options given below :

    Tap an option to check your answer.

  4. Question 4

    This type asked 8 times: 2021 Paper 3, 2021 Paper 18, 14 Jun 2022, 28 Jul 2022, 24 Jan 2023, 8 Apr 2023, 2 Apr 2025, 28 Jan 2026 S1. This one: 28 Jan 2026 S1 See all 8 of this type

    18
    The magnetic field at the center of a current carrying circular loop of radius RR is 16μ T16\mu\text{ }T. The magnetic field at a distance x=3Rx = \sqrt{3}R on its axis from the centre is ____\_\_\_\_ μT\mu T.

    Tap an option to check your answer.

  5. Question 5

    This type asked 8 times: 2021 Paper 7, 25 Jun 2022, 24 Jan 2023, 25 Jan 2023, 31 Jan 2023, 8 Apr 2023, 5 Apr 2024, 29 Jan 2025. This one: 29 Jan 2025 See all 8 of this type

    96
    The magnetic field inside a 200 turns solenoid of radius 10 cm is 2.9×10−4Tesla2.9 \times10^{- 4}Tesla. If the solenoid carries a current of 0.29 A , then the length of the solenoid is ______\_\_\_\_\_\_ πcm\pi cm.

  6. Question 6

    This type asked 7 times: 27 Jun 2022, 13 Apr 2023, 29 Jan 2024, 31 Jan 2024, 5 Apr 2024, 2 Apr 2026 S1, 2 Apr 2026 S2. This one: 2 Apr 2026 S2 See all 7 of this type

    4
    A particle having charge 10−9C10^{- 9}C moving in x−yx-y plane in fields of 0.4j^ N/C0.4\widehat{j}\text{ }N/C and 4×10−3k^ T4 \times10^{- 3}\widehat{k}\text{ }T experiences a force of (4i^+2j^)×10−10 N(4\widehat{i}+ 2\widehat{j}) \times10^{- 10}\text{ }N. The velocity of the particle at that instant is ____\_\_\_\_ m/sm/s.

    Tap an option to check your answer.

  7. Question 7

    This type asked 6 times: 29 Jun 2022, 25 Jan 2023, 27 Jan 2024, 4 Apr 2024, 22 Jan 2025, 6 Apr 2026 S2. This one: 6 Apr 2026 S2 See all 6 of this type

    13
    A current of 30 A each flows in opposite directions in two conducting wires, placed parallel to each other at a distance of 8 cm . The magnetic field at the midpoint between the two wires is ____\_\_\_\_ μT\mu T. ( μ04π=10−7 N/A2\frac{\mu_{0}}{4\pi}=10^{- 7}\text{ }N/A^{2} )

    Tap an option to check your answer.

  8. Question 8

    This type asked 6 times: 26 Jun 2022, 28 Jun 2022, 29 Jul 2022, 24 Jan 2023, 30 Jan 2023, 28 Jan 2026 S1. This one: 28 Jan 2026 S1 See all 6 of this type

    9
    Three long straight wires carrying current are arranged mutually parallel as shown in the figure. The force experienced by 15 cm length of wire QQ is ____\_\_\_\_ . ( μ0=4π×10−7 T.m/A\mu_{0}= 4\pi\times10^{- 7}\text{ }T.m/A )

    Tap an option to check your answer.

  9. Question 9

    This type asked 6 times: 29 Jan 2024, 1 Feb 2024, 5 Apr 2024, 9 Apr 2024, 23 Jan 2025, 24 Jan 2026 S2. This one: 24 Jan 2026 S2 See all 6 of this type

    13
    A moving coil galvanometer of resistance 100Ω100\Omega shows a full scale deflection for a current of 1 mA . The value of resistance required to convert this galvanometer into an ammeter, showing full scale deflection for a current of 5 mA , is ____\_\_\_\_ Ω\Omega

    Tap an option to check your answer.

  10. Question 10

    This type asked 6 times: 2021 Paper 23, 30 Jan 2023, 30 Jan 2024, 1 Feb 2024, 24 Jan 2025, 23 Jan 2026 S2. This one: 23 Jan 2026 S2 See all 6 of this type

    4
    The current passing through a conducting loop in the form of equilateral triangle of side 43 cm4\sqrt{3}\text{ }cm is 2A. The magnetic field at its centroid is α×10−5 T\alpha \times 10^{- 5}\text{ }T. The value of α\alpha is ____\_\_\_\_ . (Given : μo=4π×10−7\mu_{o} = 4\pi \times 10^{- 7} SI units)

    Tap an option to check your answer.