Voltage Induced in a Coil by a Moving Magnet

Application ID: 14163

A magnet moving axially through the center of a coil will induce a voltage across the coil terminals. One practical application of this is in shaker flashlights, where the flashlight is vigorously shaken back and forth, causing a magnet to move through a multi-turn coil, which provides charge to the battery. In this model, the motion of a magnet through a coil is modeled, and the induced voltages are computed. The displacement of the magnet is significant, so a moving and sliding mesh is used.

This model example illustrates applications of this type that would nominally be built using the following products: