So far, the electricity you’ve generated has been produced by chemical reactions. Although this source of electricity is important yet most of your home is supplied by electricity that has been produced by generators. Generators are large devices that change the energy of spinning magnetic fields into electric current.
Things Required:
Strong bar magnet
10 yards of 24-gauge insulated copper urine
Juice can
Tape
Current meter (assembled in “Simple Multimeter”)
Directions:
Strip several inches of insulation from both ends of the wire. Wrap this wire around the can into a tight coil. Leave about a foot of wire at each end of this coil. Slip the coil off the can and secure its shape with several pieces of tape. Attach the bare ends of these wires to the ends of the wires of the current meter. A complete circuit containing two coils should be formed.
Push the bar magnet in and out of the newly assembled coil. What happens to the needle that is suspended in the current meter? Can you explain your observations?
This Is What Happens:
You’ve just generated electricity. As the magnet moved in and out of the coil, it induced a back-and-forth flow of charges within the coil. This flow moved throughout the circuit. At the meter, this alternating current produced a flip-flopping magnetic field. Its effects were seen by the needle, which continually changed directions.
