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At which place Earth’s magnetic field becomes horizontal ?

June 1, 2025 by rawan239

At which place Earth’s magnetic field becomes horizontal ?

Magnetic meridian

Magnetic equator

Geographical pole

Tropic of Cancer

This question was previously asked in

UPSC NDA-1 – 2017

Download PDF Attempt Online

The Earth’s magnetic field lines are not uniform. The magnetic dip angle (or angle of inclination) is the angle that the Earth’s magnetic field makes with the horizontal plane at a given location. At the Magnetic Equator, the magnetic field lines are parallel to the Earth’s surface, meaning the magnetic dip angle is 0 degrees. Therefore, the Earth’s magnetic field is horizontal at the Magnetic Equator. At the magnetic poles, the field lines are vertical, and the dip angle is 90 degrees.

– The magnetic dip angle is the angle between the Earth’s magnetic field and the horizontal.
– The magnetic dip angle is 0 degrees at the Magnetic Equator.
– The magnetic dip angle is 90 degrees at the Magnetic Poles.

The Magnetic Equator is an imaginary line around the Earth where a freely dipping magnetic needle remains horizontal. It is not the same as the geographical equator, and its position varies slowly over time due to the shifting of the Earth’s magnetic field. The magnetic meridian at a point is the vertical plane passing through the magnetic axis at that point.

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