Answer: It decreases.
- A It increases
- B It decreases
- C It stays constant
- D It becomes negative
Correct answer: B. It decreases
Explanation: Paramagnetic susceptibility decreases as temperature increases, since greater thermal agitation disrupts the alignment of atomic magnetic dipoles with the external field. Diamagnetic susceptibility, by contrast, is essentially independent of temperature.
Magnetic field of a bar magnet: field lines emerge from the north pole and re-enter at the south pole outside the magnet, forming continuous closed loops. Image: Geek3, CC BY-SA 3.0, via Wikimedia Commons.
Concept context
Bar magnets, Earth's magnetism, and how different materials respond to an external magnetic field - diamagnetic, paramagnetic, and ferromagnetic behaviour.