• Galvanometer
• Two separate overlapping coils
• Car battery (12 V)
• Knife switch
• Connecting wires

Two overlapping coils of insulated wire are wound on a small wooden cylinder. One coil is connected through a switch to 12 V car battery. The other coil is connected directly to a galvanometer. As the switch is closed or opened, a current is observed to flow through the galvanometer. When the switch remains closed, no current is observed to flow through the galvanometer.

• Galvanometer
• Coil
• Connecting wires
• Bar magnet

A hollow core coil is connected directly to a galvanometer. As a bar magnets is moved either in or out of the coil, a current is observed to flow through the galvanometer. No current is observed while the bar magnet remains stationary within the coil.

• Hand generator connected to a light bulb

A simple hand-cranked electric generator is briefly described and demonstrated. As the crank is turned, the connected light bulb comes on. The intensity of the light is observed to be related to the rotational speed of the generator.

• Primary coil with core of iron rods (110 VAC)
• Secondary coil connected through a small light bulb
• Switch
• Connecting wires

A primary coil containing a core of iron rods is connected through a switch to the standard 110 V alternating current outlet. When the switch is closed and a secondary coil containing a small light bulb in series is placed close to one end of the iron core (where the magnetic field is strongest) the light bulb comes on indicating a current in the secondary coil.

• Coil with moveable core of iron core (110 VAC)
• Switch
• Connecting wires
• Aluminum ring
• Aluminum ring with split

A primary coil containing a core of iron rods is connected through a switch to the standard 110 V alternating current outlet. The iron core is extended and secured so as to be partly out of the coil. A conducting ring is then centered on the coil with the iron core penetrating through the ring. When the switch is closed, the ring is observed to jump as high as a few feet. When the same experiment is repeated with a split ring no such jumping is observed.

• Strong horseshoe magnet
• Insulating disk pendulum (plastic)
• Conducting disk pendulum (aluminum)

An insulating disk pendulum is observed to swing freely between the poles of a strong horseshoe magnet. When a conducting disk is allowed to swing in a similar manner, the motion is observed to be resisted by magnetic forces. In a different experiment each disk is initially at rest between the poles of the magnet and then the magnet is moved. As the magnet moves, magnetic forces are observed on the conducting disk but not on the insulating disk.

• Small neodymium magnet
• Copper tube

A small spherical neodymium magnet is dropped through a copper tube of slightly larger diameter. As the magnet falls, its acceleration is observed to be significantly reduced because of the resisting magnetic forces which are produced by the falling motion.