5K10  Induced Currents and Forces
            .15 Moving Wire with Magnet
            .20 Coil, Magnet, and Galvanometer
            .25 Magnet, Coil and Flashlight
            .30 Two Coils
            .43 Metal Detector
5K20  Eddy Currents
            .10 Eddy Currents in Pendulum
            .20 Falling Metal Strips
            .22 Eddy Current Brake
            .24 Soft Landing
            .25 Eddy Current Tube
            .25 Magnet Race
            .30 Jumping Ring
5K30  Transformers
            .20 Dissectible Transformer
            .22 Automobile Ignition System
            .30 Vertical Transformer
            .35 Light Under Water
            .40 Weld a Nail
5K40  Motors and Generators
            .31 Steam Power
            .32 Hydro Power
            .32 Wind Power
            .40 Motor/Generator
            .45 Coupled Motor/Generators
            .70 Back EMF in a Motor
            .80 Hand Crank Generator
            .81 Hand Crank Generator and Winch