This paper describes a new lab experiment where students explore the magnetic force on a permanent magnet placed inside a short solenoid. This lab is the fourth experiment performed in the second semester of the calculus-based introductory physics course at Washington University in St. Louis. The experiment is performed using a speaker (which students themselves have constructed), function generator, multimeter, and Vernier microphone while all analysis is done using Logger Pro. Experiments confirm a functional relationship similar to one that students have seen in class, while showing students the applicability of classroom physics to their world.

Topics
Microphones, Acoustic waves, Magnetic field sensors, Electrical equipment, Signal generators, Electromagnetic coils, Magnetic materials, Polymers, Educational aids, Educational assessment
1.
K.
 
Wagoner
,
K. M.
 
Hynes
, and
D.
 
Flanagan
, “
Interesting guided-inquiry labs for large-enrollment, active learning Physics II course
,”
Phys. Teach.
 
56
,
244
(
April
 
2018
).
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© 2019 American Association of Physics Teachers.
2019
American Association of Physics Teachers
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