Answer: north–south direction.
- A north–south direction
- B east–west direction
- C up–down direction
- D a random direction
Correct answer: A. north–south direction
Explanation: A bar magnet aligns itself along the Earth’s magnetic field, i.e. north–south.
Magnetic field lines form closed loops: outside the bar magnet they run from the N pole to the S pole; inside, they continue from S back to N, so the lines never start or end anywhere.
Concept context
Bar magnets, Earth's magnetism, and how different materials respond to an external magnetic field - diamagnetic, paramagnetic, and ferromagnetic behaviour.