O-LevelPhysicsMagnetism5054/11 · Oct/Nov 2023 · Q301 Mark
A bar magnet is dropped through a vertical solenoid that is connected to a sensitive ammeter. A current is induced in the solenoid and the solenoid becomes an electromagnet. Which row describes the polarity of end Y of the solenoid and the force between the solenoid and the bar magnet when the bar magnet leaves the solenoid?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Anorth, attraction
Bnorth, repulsion
Csouth, attraction
Dsouth, repulsion
✓ Correct answer
A: north, attraction
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