Sub-topic 1
2024 · National Preliminary
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Magnetic flux versus magnetic flux density: comparison
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Sub-topic 2
2026 · National Preliminary
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Magnetic force on a moving charged particle (f = qvb sinθ)
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Sub-topic 3
2026 · National Preliminary
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Magnetic force on a moving charged particle (f = qvb sinθ)
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Sub-topic 4
2025 · National Quarterfinal
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Combined electric and magnetic (lorentz) force on a charge
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Sub-topic 5
2021 · National Preliminary
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Riddle: the magnetic field
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Sub-topic 6
2024 · National Quarterfinal
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Riddle: geomagnetic isocline (line of equal magnetic inclination)
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Sub-topic 7
2023 · National Preliminary
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Riddle: magnetism, phenomena associated with magnetic fields
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Sub-topic 8
2003 · National Semifinal
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Magnetism is produced by moving electric charge
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Sub-topic 9
2013 · National Quarterfinal
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Charged particle speed, cyclotron radius and cyclotron frequency in a magnetic field (true/false)
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Sub-topic 10
2013 · National Semifinal
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Electromagnetic force: long-range, and depends on charge not mass (true/false)
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Sub-topic 11
2016 · National One-Eighth
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Galvanometer deflection behaviour for a stationary magnet held in a solenoid
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Sub-topic 12
2017 · National Quarterfinal
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Magnetic flux density at a new distance from a long straight wire, given b at one distance
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Sub-topic 13
2017 · National Quarterfinal
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Magnetic flux density at a new distance from a long straight wire, given b at one distance
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Sub-topic 14
2017 · National Quarterfinal
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Distance from a long straight wire for a given magnetic flux density, given b at one distance
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Sub-topic 15
2018 · National Preliminary
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Orbit radius of a charged particle in a magnetic field from charge/mass ratio, speed and b
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Sub-topic 16
2018 · National Preliminary
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Charge/mass ratio of a particle in a magnetic field from speed, orbit radius and b
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Sub-topic 17
2018 · National Preliminary
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Charge/mass ratio of a particle in a magnetic field from speed, orbit radius and b
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Sub-topic 18
2018 · National Preliminary
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Torque on a current-carrying rectangular coil in a magnetic field parallel to one side
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Sub-topic 19
2019 · National Preliminary
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Magnetic susceptibility of a paramagnetic substance from curie's law
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Sub-topic 20
2021 · National Semifinal
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Magnetic flux density near a wire doubles when the distance from it is halved
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Sub-topic 21
2021 · National Quarterfinal
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Magnetic force on a moving charge, f=qvbsinθ, at 45° to the field
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Sub-topic 22
2021 · National Quarterfinal
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Magnetic force on a moving charge, f=qvbsinθ, at 60° to the field
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Sub-topic 23
2021 · National Quarterfinal
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Magnetic force on a moving charge, f=qvbsinθ, with larger q, v and b at 60°
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Sub-topic 24
2022 · National Preliminary
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Riddle: magnetic flux density, a vector field quantity equal to flux per unit area
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Sub-topic 25
2023 · National Preliminary
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Riddle: magnetism, the collection of phenomena associated with moving charges
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