Purpose: Which fruit/vegetable will produce the most electric voltage?
Hypothesis: I think that the lemon will give the show the highest voltage when connected to the voltmeter because it has a high acidity level.
Materials:
Voltmeter
2 wires
Nail
Copper strip
Lemon (fruit/vegetable of your choice)
(knife if you choose to cut fruit)
Procedure:
- Cut the piece of fruit
- Put in 2 pieces of metal
- Attach to voltmeter using wires
- Record the results
- Compare results from several pieces of fruit.
Why? (why will this fruit produce the highest voltage)
I chose the lemon because it is one of the fruits/vegetables with the highest acidity level. The acid in this citric vegetable acts as an electrolyte that conducts electricity.
For those who don’t know an electrolyte is a liquid or gel that contains ions and can be decomposed by electrolysis, e.g., that present in a battery.
Observations:
-Different fruits/vegetables have different voltages.
-Wires must be correctly attached.
-If you attach the two wires to different fruits there is no voltage.
-The more fruits you attach it to the higher the voltage.
Results:
Potato: 0.7V
tomato: 0.45V
carrot: 0.5V
Lemon: 0.9V
When we stack the nail and copper strip in all of them at the same time you get: 0.8V
Questions:
What is causing the electrons to flow in this experiment?
-Electrons flow from negative to positive as they move they strike out neon atoms and kick electrons out, therefore there are more electrons. This causes more electrons for the negative charge of the flow.
What are the independent, dependent, and controlled variables in this experiment?
-Indipendent: The fruits
-Dependant: The voltage
-Controlled: copper strip, nail, voltmeter
How can we modify the experiment to improve our results?
-We can study different fruits and figure out the electrolytes in each of them.
What could be sources of error or uncertainty in your experiment?
-Maybe someone who doesn’t know how to read the voltmeter was reading and in the end, read it wrong.
-The wires could be attached incorrectly.
How could I use this in my everyday life?
-To be honest, I have no idea where I would use this.
-I think I would leave it to bigger companies or scientists to figure out how this could be used.
Conclusion:
The fruit that produced the highest voltage was the lemon.
My hypothesis was correct, the lemon did produce the highest voltage of 0.9V
What would happen if we used different metals for this experiment?
Very good post outlining the learning you gained from creating your own battery with fruit. Interesting what came out as the best electrolyte. Why do you think using this gave the highest voltage? Don’t forget to include your units! Great work, though!
Thank you again, Mr.Robinson I did state that I think it is because it had the highest acidity level so the electrolyte is higher. I updated and added the units.