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This is a demonstration of Faraday's law using a galvanometer, a bar magnet, and three induction coils. Changing the magnetic flux through a coil induces an emf and a current in the coil, which is shown by the galvanometer. The larger the number of turns in the coil, the greater the current.
This demonstration was created at Utah State University by Professor Boyd F. Edwards, assisted by James Coburn (demonstration specialist), David Evans (videography), and Rebecca Whitney (closed captions), with support from Jan Sojka, Physics Department Head, and Robert Wagner, Executive Vice Provost and Dean of Academic and Instructional Services.