Question

Assertion(A)

The horizontal component of Earth’s magnetic field at the pole is Zero.

Reason(R)

Dip angle at the pole is 90o​

Answer 1

The answer is of the question (60)

Answer 2

Answer:

The horizontal component of the Earth's magnetic field remains zero at the magnetic poles.

We know that magnetic inclination or angle of dip refers to the angle made by the Earth's total magnetic field (B) with the horizontal component of the Earth's magnetic field (B_{H}B

H

). The horizontal component increases as and when the angle of dip decreases. Thus, the horizontal component will be least when the angle of dip is highest.

The angle of dip is maximum (90°) at the poles. Hence, the value of horizontal component of magnetic field will be least (zero) at the poles.