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====== Magnetic Fields ======

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  * Reading: GVC (ss) [[bb>book:physics:bs|Derivation of the Biot Savart Law from Magnetic Vector Potential]]--[[bb>book:physics:compareab|Compare A and B for a Spinning Ring]]

===== In-class Content =====

  * Derivation of the Biot-Savart Law from Magnetic Vector Potential (lecture - 15 min) 
  * [[..:..:activities:vfact:vfbring|Magnetic Field Due to a Spinning Ring of Charge]] (SGA - 50 min)
  * (//optional//) Comparing B and A for spinning ring (class discussion/lecture - 15 min) **Note:** Curl is needed for 3 different ideas in this class: Conservative Work, Going from $\vec A$ to $\vec B$, and getting from $\vec B$ to $\vec J$. 


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