Question

Earth’s magnetic field always has a horizontal component except at

• A. equator
• B. magnetic poles
• C. a latitude of 60°
• D. an altitude of 60°

Answer 1

The Correct Option is B

Earth's magnetic field always has a horizontal component except at the magnetic poles. At the magnetic poles, the field lines are vertical, so there is no horizontal component. The horizontal component is maximum at the equator and decreases as we move towards the poles where it becomes 0. Altitude does not change the fact that there is a horizontal component unless the altitude is 0 (i.e. at the magnetic poles of the Earth)

The correct answer is (B) magnetic poles.