How to Conduct Electricity With Fruits or Vegetables

Written by jesa lynn
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How to Conduct Electricity With Fruits or Vegetables
Food battery. (bio battery image by dinostock from

According to the California Energy Commission, you can make a voltaic battery out of fruits and vegetables such as lemons or potatoes. Any fruit or vegetable with a moderate to high acidity level can use a chemical reaction to conduct electricity. A lemon, with higher acidity than other fruits and vegetables, will create the strongest battery.

Skill level:
Moderately Easy

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Things you need

  • 2-inch copper wire
  • Lemon
  • 2-inch steel wire

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  1. 1

    Straighten a 2-inch copper wire with your fingertips. Soften the lemon by squeezing carefully without breaking the skin.

  2. 2

    Push the copper wire firmly through the skin and into the lemon to create a copper electrode.

  3. 3

    Straighten the 2-inch steel wire with your fingertips.

  4. 4

    Push the steel wire through the skin and into the lemon as close to the copper electrode as you can without allowing them to touch.

  5. 5

    Wet your fingertip with saliva or water and touch the tips of both electrodes at the same time. You will feel a mild electrical current as you close the circuit with your finger.

  6. 6

    When you have finished the experiment, carefully remove the electrodes one at a time without allowing them to touch each other.

Tips and warnings

  • You can use the tip of your tongue to close the circuit as well.
  • After the experiment, you can still eat the lemon.
  • The amperage produced from a lemon is very low, but you should still use caution when experimenting with electricity and chemical reactions.

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