JEE Main Magnetic Effects of Current questions with solutions
Biot-Savart law, Ampere law, force on moving charges and currents, galvanometer. 24 questions from our 2016–2025 JEE Main pattern papers, from the Class 12 Physics syllabus. Each has the answer and a full solution.
Also practise: Magnetic Effects of Current for JEE Advanced
JEE Main 2025
- A particle of charge q and mass m enters, with speed v perpendicular to its boundary, a region of width d containing a uniform magnetic field…
- A long wire carrying current I comes in along a straight line, goes round a semicircle of radius R and goes out along a second straight line. The two…
- A coil of inductance L and resistance R is connected at t=0 across an ideal battery. The time at which the energy stored in its magnetic field…
JEE Main 2024
JEE Main 2023
- A proton and an α-particle, both starting from rest, are accelerated through the same potential difference and enter a region of uniform magnetic…
- A metal rod of length 0.5 m rotates uniformly at 40 rad s^-1 about one end in a plane perpendicular to a uniform magnetic field of 0.4 T. Its free…
- A wire of length 0.2π m is wound into a closely packed circular coil of two turns and carries a current of 5 A. If the magnetic field at the centre…
JEE Main 2022
- An electron enters a region of uniform magnetic field B (perpendicular to its velocity) which extends over a width d perpendicular to the initial…
- Two parallel, smooth conducting rails inclined at 37^° to the horizontal are a distance 0.5 m apart and are joined at the lower end by a 0.2 Ω…
- Two long straight insulated wires lie in the same plane, along the x-axis and the y-axis, crossing at the origin without electrical contact. The wire…
JEE Main 2021
- An inductor L=0.2 H is connected in series with R=10 Ω and an ideal battery at t=0. At the instant when the rate at which the battery's energy is…
- A wire carrying current I=10 A forms a closed loop consisting of two concentric semicircular arcs of radii 10 cm and 20 cm in the same plane, joined…
- Two long smooth conducting rails are inclined at 30^° to the horizontal and are 0.5 m apart. They are joined at the lower end by a 3 Ω resistor. A…
JEE Main 2020
JEE Main 2019
- A proton enters a uniform magnetic field of 0.1 T with a speed of 2×10^5 m s^-1 in a direction making an angle of 60^° with the field. Take…
- A long wire carrying a current of 10 A is bent into a hairpin: it runs up along a straight line, goes round a semicircle of radius 5 cm and returns…
- Two long vertical conducting rails 0.4 m apart are joined at the top by a resistor of 0.4 Ω. A horizontal rod of mass 20 g and negligible resistance…
JEE Main 2018
JEE Main 2017
JEE Main 2016
Other Physics topics
Atoms, Nuclei and Dual Nature of Radiation 29Calorimetry and Heat Transfer 13Capacitors 10Current Electricity 13Electromagnetic Induction and Alternating Current 16Electrostatics 15Fluid Mechanics, Elasticity and Surface Tension 15Gravitation 10Kinematics and Laws of Motion 27Ray and Wave Optics 16Rotational Motion 16Semiconductors and Communication 11Simple Harmonic Motion 11Thermodynamics and Kinetic Theory of Gases 19Units and Measurements 10Waves and Sound 23Work, Energy and Power 11