Cheerios are magnetic because they contain iron. When electricity is flowing in the wire, magnetism surrounds the coil. You can pick up magnetic materials and release them by shutting off the electricity. A speaker converts electrical current, changing with the beat of the music into sound. A magnetic impulse produces a loud bang and Rice Krispies fly in the air.
Sparks appear when a circle of metal foil is cut.
Garfield is launched into space on a magnetic pulse. Rice Krispies and Ping-Pong balls fly away from the dome because of the electric force. Magnetic Levitation A 10-inch aluminum pan floats in space on a magnetic field. We tested aluminum and found that it is not magnetic. Trains in the future may ride on a cushion of magnetism.