Light a Bulb with Your Very Own Potato Battery!
Materials One large potato
Two Pennies
Two Zinc-covered nails
Three pieces of wire
A small flashlight bulb
Knife
Instructions 1. Wrap each penny with wire.
2. Cut the potato in half.
3. Cut a small slit in each half of the potato large enough for a penny.
4. Place one penny in each half of the potato.

5. Place one nail into each potato. Be sure that the nails do not touch the
pennies.
6. Connect the wire from one penny to the nail on the other piece of potato. Wrap the wire around the nail a few times.
7. Take the last piece of wire and wrap it around the other nail.

8. Now touch the light bulb with the ends of the wires coming off of one of
the nails and one of the pennies.

Electric Circuits

http://MathInScience.info