JEE Advanced Magnetic Effects of Current questions with solutions
Biot-Savart law, Ampere law, force on moving charges and currents, galvanometer. 37 questions from our 2016–2025 JEE Advanced pattern papers, from the Class 12 Physics syllabus. Each has the answer and a full solution.
Also practise: Magnetic Effects of Current for JEE Main
JEE Advanced 2025
- Two long smooth horizontal rails separated by L=0.5 m are joined at one end by a resistor R=2 Ω (rails and rod have negligible resistance). A uniform…
- A proton enters, at the origin, a region having uniform magnetic field B=0.20 T along +z and uniform electric field E=1.0×10^4 V m^-1 also along +z.…
- A proton (mass 1.67×10^-27 kg, charge 1.6×10^-19 C) is released from rest in a region with a uniform electric field E=2000 V m^-1 along +y and a…
JEE Advanced 2024
- Two long, smooth, horizontal parallel rails are 0.5 m apart in a uniform vertical magnetic field B=0.8 T. They are joined at one end by an ideal…
- A small particle has specific charge q/m=500 C kg^-1. It is released from rest at the origin in a region with a uniform magnetic field B=0.1 T along…
- Two long, parallel, smooth horizontal conducting rails, a distance l=2 m apart, are connected at one end by an uncharged capacitor of capacitance…
- A particle of mass m and charge q enters a region of uniform magnetic field vec B with speed v, its velocity making an angle of 60^° with vec B. A…
JEE Advanced 2023
- A particle of mass m and charge q is projected from the origin with velocity v0x in a region where a uniform magnetic field Bz and a uniform electric…
- Two long parallel conducting rails are fixed on a smooth plane inclined at 30^° to the horizontal and are 0.50 m apart. Their upper ends are joined…
- A long solid cylindrical conductor of radius a=10 cm carries a uniform current density J=5×10^5 A m^-2 along its axis. It has a long cylindrical hole…
JEE Advanced 2022
- Two parallel conducting rails, 0.5 m apart, are inclined at 30^° to the horizontal and joined at the lower end by a resistor of 0.2 Ω. A smooth…
- A proton accelerated from rest through a potential difference V enters a uniform magnetic field perpendicular to its velocity and moves on a circle…
- A uniform metal rod of length l=0.5 m rotates about one end with constant angular velocity ω=40 rad s^-1 in a uniform magnetic field B=0.2 T…
- A wire carrying current I forms a closed loop made of two circular arcs, each subtending an angle of 120^° at the common centre O, of radii R and 3R…
JEE Advanced 2021
- A long straight horizontal wire carries a steady current I1 = 200 A. A rigid rectangular loop of mass 0.60 g lies in the vertical plane containing…
- A moving-coil galvanometer of resistance 50 Ω gives full-scale deflection for a current of 2.0 mA. It is converted into a 0 to 1 A ammeter and…
- Two long horizontal smooth conducting rails, 0.4 m apart, lie in a uniform vertical magnetic field B=0.5 T and are joined at one end by an ideal…
- Paragraph 3: A proton (mass 1.67×10^-27 kg, charge 1.6×10^-19 C) enters, at the origin, a region containing a uniform magnetic field B=0.20 T along…
JEE Advanced 2020
- Two long smooth parallel rails are inclined at 30^° to the horizontal and are joined at the top by an ideal capacitor of 0.4 F. A conducting rod of…
- A closed wire loop consists of two concentric semicircular arcs of radii 0.10 m and 0.20 m having the common centre O, joined by two straight radial…
- Two long horizontal smooth rails are 1.0 m apart and joined at one end by a 2.0 Ω resistor. A uniform vertical field B=0.50 T exists everywhere. A…
- A wire carries a steady current 5.0 A along a closed path made of two semicircular arcs of radii 0.10 m and 0.20 m, both centred at the same point O…
JEE Advanced 2019
- A long air-core solenoid of radius 10 cm carries a current that makes the uniform axial magnetic field inside it increase at the steady rate 0.50 T…
- Two long smooth parallel rails, a distance l=0.50 m apart, are inclined at 30^° to the horizontal and joined at the bottom by a resistor R=1.0 Ω. A…
- A long wire carrying a current I=5.0 A is bent into a hairpin: two straight parallel semi-infinite sections, separated by 2R with R=10 cm, are joined…
JEE Advanced 2018
JEE Advanced 2017
- Two smooth parallel metal rails, 0.5 m apart, are inclined at 30^° to the horizontal and joined at the bottom by a resistor R=2 Ω. A uniform magnetic…
- Paragraph 2: A particle of mass m and charge q>0 moves in uniform fields. Define the time τ=(π m)/(qB0). At t=0 the particle is at the origin. Column…
- A particle of mass m and charge q moves with speed v0 and enters, perpendicular to its boundary, a region of width d=mv0/2qB containing a uniform…
JEE Advanced 2016
- Two long, smooth, horizontal conducting rails are 0.50 m apart and joined at one end by a resistor of 2.0 Ω. A uniform vertical magnetic field of…
- A proton of mass 1.67×10^-27 kg and charge 1.6×10^-19 C enters a uniform magnetic field of 0.20 T with speed 1.0×10^6 m s^-1, its velocity making an…
- Two long, smooth, horizontal conducting rails a distance l apart are connected at one end by a capacitor of capacitance C, and a uniform vertical…
- A particle of mass m and charge q enters, perpendicular to its boundary, a region of width d in which a uniform magnetic field B acts perpendicular…
Other Physics topics
Atoms, Nuclei and Dual Nature of Radiation 35Calorimetry and Heat Transfer 17Capacitors 11Current Electricity 13Electromagnetic Induction and Alternating Current 25Electrostatics 15Fluid Mechanics, Elasticity and Surface Tension 21Gravitation 13Kinematics and Laws of Motion 11Ray and Wave Optics 21Rotational Motion 31Simple Harmonic Motion 15Thermodynamics and Kinetic Theory of Gases 23Units and Measurements 8Waves and Sound 28Work, Energy and Power 9