Demonstrate Eddy currents in a pie plate Classes Used: Phys 102, 108

Eddy Currents Updated on 05/30/13

To demonstrate Eddy currents

Large pie plate Hb2 Pencil Small vice Neodymium magnets

Place pencil in the vice as shown Attach the pie plate to the pencil by placing its central groove on top of the pencil tip Ensure the pie plate is balanced Hold the magnets about an inch above the surface of the plate and start slowly start making circles along a radius of the pie plate The pie plate will start spinning Increase speed as pie plate turns faster