Question

Earth's magnetic field always has a horizontal component except at or Horizontal component of earth's magnetic field remains zero at

• A. Equator
• B. Magnetic poles
• C. A latitude of ${60}^{\circ }$
• D. An altitude of ${60}^{\circ }$

Answer 1

The correct option is B Magnetic poles

At magnetic poles, the angle of dip is ${90}^{\circ }$. Hence the horizontal component $B_H=Bcos\theta =0$