Answer: 0.52 × 10⁻⁴ T.
- A 0.30 × 10⁻⁴ T
- B 0.17 × 10⁻⁴ T
- C 0.52 × 10⁻⁴ T
- D 0.60 × 10⁻⁴ T
Correct answer: C. 0.52 × 10⁻⁴ T
Explanation: tan(dip) = Bv/Bh, so Bv = Bh tan(60°) = 0.3 × 10⁻⁴ × 1.732 ≈ 0.52 × 10⁻⁴ T.
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.