Physics 201 Introduction to Electricity & Magnetism 

November 8 Calculating Magnetic Fields  



Remember way back
to when we first started to calculate electric fields due to static charges?
We used:
By summing up all of the chunks of charge we could
find the total electric field at a specific point. Doing it this
way wasn't always easy, and we eventaully found Guass' Law useful for situations
which had sufficient symmetry.
For magnetic fields, there is a similar expression:
This is the BiotSavart law. The contant in front is the permeability of free space 4p x 10^{7} T m/A. We can rewrite this with the Coulomb's contant, k.


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