# Explanation of Biot-Savart field

I need to get the Biot-Savart equation from taking the curl of a general field. The question is in the attached document.

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#### Solution Preview

Please see the attached file for the complete solution.

Hello and thank you for posting your question to Brainmass.

The vector (please see the attached file) is given by:

(please see the attached file)

And we have:

(please see the attached file)

So, for example, taking the derivative with respect to x yields:

(please see the attached file)

By the same token:

(please see the attached file)

The magnetic potential is given by:

(please see the attached file)

Where ...

#### Solution Summary

The solution shows how to go from the expression for the magnetic potential to the well known Biot-Savart law for magnetic fields. It is enclosed in a 4 page attached document.