Angle of dip at magnetic pole of earth is

Concept

The angle of dip (magnetic inclination) at a place is the angle that the Earth's resultant magnetic field makes with the horizontal plane. It ranges from 0° at the magnetic equator (field entirely horizontal) to 90° at a magnetic pole (field entirely vertical).

Application

At a magnetic pole, the Earth's field lines converge and point straight down (or straight up), perpendicular to the horizontal surface. This means the field's horizontal component is zero and its vertical component equals the full field strength, so the dip angle is 90°.

Cross-check

This is consistent with the known variation of dip with magnetic latitude: 0° at the equator, rising smoothly to 90° exactly at the poles — a compass dip needle at the pole would stand vertical, confirming the 90° value.