Frogs Legs, Peas and Potatoes

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Frogs Legs, Peas and Potatoes
By Aarti Patel Hannah Diver Chloe King
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Alternative to Batteries

• Introduction
• We have been looking at different ways to make
  batteries from several different food substances.
  We have looked at five different substances and
  have carried out an experiment to see if they can
  carry an electrical current. The food and drink
  we have chosen are the following Carrot, potato,
  vinegar, salty water, banana and mashed potato.
  We also experimented by using the same
  electrodes.

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Aim of the Experiment

• The aim of this experiment is to find
  substances which would make a homemade battery
  and follow out an experiment to collect the data.
  Our main plan was to find the substance with the
  highest and lowest voltage.

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Equipment

• Carrot
• Potato
• Vinegar
• Salty water
• Banana
• Voltmeter
• Two Different metals (Iron, Copper)
• Beaker
• Wires

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Method

• Take your substance and place your two different
  metals in it. Connect the wires to the metals and
  then connect the other end of the wires to the
  voltmeter. Then see if the voltmeter recognises
  that a current is passing through it. If so the
  substance you have chosen has passed as a
  homemade battery. If not there must be something
  blocking the current and its a good idea to find
  out what.

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Results
Fruit/ Veg Type of electrodes 1 Type of electrodes 2 Voltage Extra ingredients
Potato Copper Iron 0.50 N/A
Carrot Copper Iron 0.46 N/A
Banana Copper Iron 0.48 N/A
Vinegar (80ml) Copper Iron 0.50 N/A
Salty Water (80ml) Copper Iron 0.51 Salt (2 tsp)
Salty water (80ml) Copper Iron 0.42 Salt (6 tsp)
Mashed potato Copper Iron 0.24 N/A
Potato Copper Copper 0.02 N/A
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Conclusion

• We tried experimenting with several different
  substances but in our results the best was the
  salty water with only 2 tsp. On the other hand
  the potato using the same electrodes was the
  worst. We also experimented with mashed potatoes,
  unfortunately the results were twice as bad as a
  raw potato. All the results varied from 0.02
  0.51.

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for watching