How to make a Lemon Battery for Kid’s Science Fair?
The lemon battery is one of the most popular and easiest science experiments for kids. It’s a quick and fun experiment to do and kids can get really involved with it.
Did you know that you can make a battery using lemons? Here is the step by step procedure on how to make a lemon battery
What you’ll need:
- 2 lemons
- Sharp knife
- Three 4” pieces of copper wire
- 6 alligator clips
- 1.5V mini light bulb and holder
- Galvanized nail
- Thick copper wire
What to do:
NOTE: Get an adult to help you with this step and be very careful while handling the knife.
- Carefully use a sharp knife to cut two slits in each lemon about 1/2” deep. Make sure that the inside of the lemons is exposed. If the skin is thick, make the insertion deeper until the fruit is exposed.
- Insert the copper wire into one slit and the nail into the other slit for each lemon.
- Now, attach an alligator clip to each end of each piece of wire.
- Attach one end of the first wire to the nail in the first lemon. Attach the other end of this wire to the light bulb.
- Connect the second wire from the copper wire in the second lemon to the light bulb.
- Finally, using the third wire, connect the nail in the second lemon to the copper wire in the first lemon.
- Observe what happens to the light bulb.
Troubleshooting Tips: If your light bulb isn’t lighting, first make sure you have a galvanized nail. A steel nail will not work; it must be covered in zinc.
Make sure your wires are completely connected. If they are loose, you’ll lose electricity and your light bulb won’t turn on. At last, make sure your lemon is fresh so you have the maximum amount of chemicals to power your battery.