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

AI Thread Summary
The magnetic field strength at Earth's surface near the poles is approximately 0.00006 tesla. The discussion references the Earth's magnetic dipole moment, denoted as D_0, and suggests using the dipole field for calculations. Participants express uncertainty about equating the dipole moment to the magnetic field strength. A link to additional data on magnetic field orders of magnitude is provided for further reference. Overall, the thread focuses on understanding the magnetic field strength at the poles using relevant equations and concepts.
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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.
 
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Perhaps use the dipole field?
 
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.
 
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