Answer: horizontal.
- A horizontal
- B purely vertical
- C diagonal
- D radial
Correct answer: A. horizontal
Explanation: The horizontal component, along with declination and dip, fully specifies the Earth’s field at a place.
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.