Answer: paramagnetic.
- A paramagnetic
- B diamagnetic
- C a permanent magnet
- D completely non-magnetic
Correct answer: A. paramagnetic
Explanation: Thermal agitation destroys the aligned domains, so the material turns paramagnetic above the Curie point.
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.