Alexander Fufaev
My name is Alexander FufaeV and here I will explain the following topic:

An Ion Orbits Around The Equator in The Earth's Magnetic Field

An Ion Orbits Around The Equator in The Earth's Magnetic Field

A positively charged particle orbits the Earth in a westward direction along the equator. The circular path is due to the earth's magnetic field, which has approximately a constant value at the equator.

This particle experiences a Lorentz force (magnetic force) directed towards the center of the earth, which you can easily understand with the right-hand rule.