Answer: 45°.
- A 90°
- B 0°
- C 45°
- D 30°
Correct answer: C. 45°
Explanation: Since tan(dip) = Bv/Bh and the two components are equal here, tan(dip) = 1, giving a dip angle of 45 degrees.
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.