What is the magnetic field strength on Earth's surface at either pole?

[tnutty]

Homework Statement

What is the magnetic field strength on Earth's surface at either pole?

Earth's magnetic dipole moment is D_0

What is the magnetic field strength on Earth's surface at either pole?

B = ____ G

Homework Equations

_u = NIA ; N is the number of turns I is current, A is the corss sectional area

The Attempt at a Solution

I am not sure, they give _u = D_0, but U am not sure what to equate this to.

 

[Troels]

Perhaps use the dipole field?

 

[Frostedpanda]

http://en.wikipedia.org/wiki/Orders_of_magnitude_(magnetic_field )

about .00006 tesla

Doesn't give the pole strength, but probably has the data you want.