Question

At the magnetic north pole of the earth, the value of the horizontal component of earth's magnetic field and angle of dip are respectively

​​​​​​​$[$1 Mark$]$

• A. zero, maximum.
• B. maximum, minimum.
• C. maximum, maximum.
• D. minimum, minimum.

Answer 1

The correct option is A zero, maximum.

At the magnetic north pole of the Earth, the direction of the magnetic field is in the upward direction and the Earth has no horizontal component at the magnetic north pole. Hence, the value of the horizontal component of the Earth’s magnetic field at the magnetic north pole is zero.

The angle of dip for the Earth’s magnetic field is the angle between the magnetic equator of the Earth and the Earth’s magnetic field. At the magnetic north pole, the magnitude of the angle between the magnetic equator and the magnetic north pole is, ${90}^{\circ }$, which is maximum.