Magnetic Torque on a Coil Demo: Motors

This is a simple demonstration of the operation of a motor without any permanent magnets. The demonstration includes a discussion of the electromagnets, rotor, commutator, and brushes in the motor.

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.