A small neodymium magnet moves with constant velocity through a coil, and the voltage induced is recorded with a computer interface. The observed voltage is compared to that predicted by simple calculations of magnetic flux using spherical polar coordinates. The close agreement between predicted and observed values combined with the experience gained in modeling the magnetic dipole field make this a very good experiment for the undergraduate student.
A simple quantitative motional emf experiment. The induced voltage is recorded in this computer-based experiment as a coil is moved through the field of a permanent magnet. Results compare closely with predicted values.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.