Currents from the kitchen

  1. Purpose: Which fruit will produce the most electric voltage?
  2. Hypothesis: We will get electricity when we connect the right fruit to the wires, like an orange
  3. Material:  1 voltmeter, 2 wires. 1 nail, 1 copper strip, a lemon, an orange and potato
  4. Procedure:  We connected the wires to the voltmeter, put the copper strip and nail in the fruit and connect the wires from the voltmeter to the copper strip and nail.
  5. Reasoning/Why:  Because oranges are citric

Lemon: 0.5V

Orange: 0.2V

Potato: 0.5V

  • Electron are flowing because of wires, the copper strip and the chemical that makes certain fruits and veggies starchy or sour
  • Independent variable: fruits
  • Dependent variable: voltage
  • Controlled variable: copper strip, nail, wires
  • We could use iron and gold instead of the copper
  • Wires breaking, rotten fruits and vegetables
  • We could someday use apples , potatoes and lemons to charge our phones