e&m.jpg (12862 bytes)

Jumping Rings

 

EQUIPMENT
    redball.gif (326 bytes) Solenoid with Rings
    redball.gif (326 bytes) AC Cord


NARRATIVE
       The magnetic field due to eddy currents in a conductor in an extended magnetic field always opposes that field. Connect the solenoid to 110 VAC through an enclosed switch. Place either the copper or aluminum ring over the extended core. Close the switch and the ring will jump off of the core. If the ring is held down over the core while the solenoid is on, it will become warm showing that current is in the ring. Do not leave on for long periods.