Project 3 — Cells From Fruits and Vegetables

Last updated at July 13, 2026 by

Try to make an electric cell using different fruits and vegetables. Also try electrodes made of different metals. See which combinations make the LED glow. Prepare a brief report of your results.
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Many juicy fruits and vegetables can work as electrolytes.

Good Practices

  • Use two different metals as electrodes, like copper and iron.
  • Try lemon, potato, tomato, and other juicy items.
  • Join several cells to get enough current.
  • Check if the LED glows for each combination.
  • Note which items work best.
Different metals with a juicy electrolyte can make a working cell.

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