Question

Where on the surface of earth is the vertical component of earth's magnetic field zero?

Answer 1

At the magnetic poles, a dip needle stands vertical (dip=90 degrees), the horizontal intensity is zero, and a compass does not show direction. At the north magnetic pole, the north end of the dip needle is down; at the south magnetic pole, the north end is up. At the magnetic equator the dip or inclination is zero.

Answer 2

Hey !!

On the equator S, the vertical component of earth's magnetic field is zero.

Good luck !!