I am trying to do a pre-lab assignment for an introductory calc-based E&M course, and it involves the calculation of a magnetic field due to a bar magnet.(adsbygoogle = window.adsbygoogle || []).push({});

My first inclination was to use the B = (mu/4pi) * (q (V x R ) / R^{3}) equation, but I am quite certain that this is not the correct approach.

There is no single moving charge with velocity V which we can pinpoint, and Identifying every charge is clearly not the intent (integrating could be a possibility, but I am still convinced that there exists some other equation/idea that I can apply).

I don't have my book at hand, and we have not discussed anything like this in lecture yet (I do have my note-book).

Can someone point me in the right direction?

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# Calculating the Magnetic Field due to a Bar Magnet

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