Practice portal › GSEB › Magnetism and Matter

Bar Magnet and Dipole in a Field for GSEB: 14 solved questions

Real GSEB paper questions on bar magnet and dipole in a field, part of magnetism and matter. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 2015 to 2023. No sign-in needed to read them.

What this topic asks

• Field of a bar magnet and earth's field — 6 questions
• Dipole in a uniform field — 5 questions
• Magnetic moment of magnets and loops — 3 questions

All 14 questions with solutions

• At each of the two ends of a rod of length 2r, a particle of mass m and charge q is attached. If this rod is… GSEB Board July 2015
• A bar magnet is oscillating in the Earth's magnetic field with periodic time T. If a similar magnet with the… GSEB Board July 2015
• A straight steel wire of length l has magnetic moment m. If the wire is bent in the form of a semicircle, the… GSEB Board July 2015
• Inside a bar magnet, the magnetic field lines GSEB Board July 2017
• A magnetic needle kept non parallel to the magnetic field in a non uniform magnetic field experiences . GSEB Board July 2017
• A bar magnet of length l, pole strength p and magnetic moment m is cut into two equal pieces, each of length… GSEB Board March 2018
• At a place on Earth, the vertical component of Earth's magnetic field is √3 times its horizontal component. T… GSEB Board March 2020 (old course)
• What is the magnitude of the equatorial magnetic field due to a bar magnet of length 5.0 cm and having magnet… GSEB Board August 2020
• A short bar magnet placed with its axis at 30° with a uniform external magnetic field of 0.15 T experiences a… GSEB Board August 2020
• A jet plane is travelling towards west at a speed of 500 m s⁻¹. What is the voltage difference developed betw… GSEB Board August 2020
• According to Gauss's law for magnetism, the net magnetic flux through any closed surface is . GSEB Board July 2021
• A short bar magnet placed with its axis at 30° with a uniform external magnetic field of 0.25 T experiences a… GSEB Board March 2022
• A bar magnet is of length (size) l. The ratio of its equatorial field and axial field for the same distance r… GSEB Board March 2022
• A magnetic needle has magnetic moment 6.7×10⁻² A m² and moment of inertia 7.5×10⁻⁶ kg m². Its period of oscil… GSEB Board July 2023