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====== Drawing Amperian Loops ======

===== Prompt =====

** "Draw an Amperian loop that you would use to calculate the magnetic field of a sheet of current. " **




===== Context =====

This [[strategy:smallwhiteboard:|SWBQ]] can be done as a part of the lecture that is the introduction to the [[courses:activities:vfact:vfampere|Ampere's Law]] Activity. It is a way to prime students for thinking about what symmetry arguments are needed.





===== Wrap Up =====
  * One that is parallel or perpendicular to field at every point and where the magnitude is constant
  * $\vec{B}=\pm B(z)\, \hat{y}$ from symmetry arguments (see lecture), so want constant $z$, same infinitesimal distance ($dz$) above and below sheet


{{vfswamperianloop.ppt|Powerpoint prompt}}
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{{vfswamperianloop.pdf|PDF prompt}}

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