Make a simple generator that will help show how electricity is produced.
A generator works because the magnets are exciting the electrons in the coil. The magnet moving back and forth creates alternating current (AC). That is the electrons are moving back and forth through the coils and the LED (light emitting diode). The excited electrons passing through the LED lights the LED.
This idea for our first instructable came from Jonathan Hare at http://www.creative-science.org.uk/gensimple1.html
Check out our website at catsscience.com
Step 1: Materials
Thin insulated copper wire*
Magnets that just fit in canister**
Scissors or wire cutters
*We used 30 guage magnet wire
**Neodymium magnets work best but we were able to get the light to turn on with ceramic magnets (much cheaper).
Step 2: Put Wire into Can
Step 3: Wind Wire
Cut from spool of wire.
1000 times wrapped around looks like this.
Step 4: Tape Wire Down
Remember to leave about 3inches or so of wire free at each end.
Carefully take out the 3 inches of wire from inside the canister.
Step 5: Attach LED
Solder the connections if possible or wrap the exposed wire to the legs of the LED. Use some tape to secure the wire and LED to the bottom, top, or side of the can.
Step 6: Shake
Hold the can between thumb and forefinger at the two ends of the can with thumb or forefinger on the lid to stop it coming off!
The LED will light!!