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