If the earth’s magnetic field has a magnitude 3.4 × 10 –5 T at the magnetic equator of the earth, what would be its value at the earth’s geomagnetic poles?

Question

Philoid · Accepted Answer

Given, magnetic field at the magnetic equator,

let M be the magnetic moment of earth's magnetic dipole and R be the distance of the observation point from the centre of earth magnetic dipole.

As the point on the magnetic equator is on the equatorial position of earth magnet, the magnetic field at the equatorial point(B)is given by,

at the pole ⇒

If the earth’s magnetic field has a magnitude 3.4 × 10–5 T at the magnetic equator of the earth, what would be its value at the earth’s geomagnetic poles?

If the earth’s magnetic field has a magnitude 3.4 × 10^–5 T at the magnetic equator of the earth, what would be its value at the earth’s geomagnetic poles?