This (Quicktime) animation shows that an emf (and current) is induced in a coil if the flux through the coil increases due to a change in the magnitude of the magnetic field passing through it. It shows that (a) the direction of the emf (and current) depends on whether the magnetic field is increasing or decreasing, and (b) the magntidue of the emf (and current) depends on the rate at which the magnetic field changes. Download the animation (5.6MB).

This animation was obtained from the "Core Concepts in Physics" CD-ROM produced by Saunders College Publishing. They are to be used for Educational Purposes only; do not copy.