Answer: attract each other.
- A attract each other
- B repel each other
- C do nothing at all
- D cancel out
Correct answer: A. attract each other
Explanation: A north pole and a south pole attract each other.
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.