Answer: large and positive.
- A large and positive
- B small and negative
- C small and positive
- D exactly zero
Correct answer: A. large and positive
Explanation: Ferromagnets have a very large positive susceptibility.
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.