purpose: which fruit will produce the most electric voltage?
hypothesis: the orange will have the highest electric voltage.
Materials: 1 voltmeter, 2 wires, 1 nail, 1 copper strip, at least 3 fruits/vegetables
procedure: attach one side of wire to voltmeter, attach other side to nail, stick in fruit/ vegetables, attach the second wire to other side of voltmeter, attach the other side of the second wire to the copper strip, put in other side of fruit/ vegetable, check voltage.
reasoning: i think that the orange would have the highest voltage because of the amount of juice in the fruit, my reasoning for thinking that is because the fact of the fruit having more liquid it could be in good health so its voltage amounts would be higher.
results:
we used a orange 0.4v, lemon 0.7v, banana 0.4v, apple 0.4v, and a potato 0.6v.
how can i use this in my everyday life? i could use this as a creative way to charge items.
how can we modify our experiment to improve our results? maybe using a whole fruit instead of cut in half ones to get a higher voltage.
what are the independent, dependent, and controlled variables in this experiment?
independent: electrons flowing through the fruit
dependent: inserting the nail, copper wire
controlled variables: voltmeter
what could be sources of error and uncertainty in our experiment?
sources of error and uncertainty could be putting wires in the wrong places and not getting the correct answer because of that error, could be uncertainty by not being able to read the voltmeter and being unsure of your results.
what are causing electrons to flow in this experiment?
citrus fruits contain citric acid, an electrolyte that allows electricity to flow. the abilities come from the electron exchange between a pair of electrodes that you have in the fruits pulp.
conclusion: my hypothesis was not correct, the lemon had the highest voltage out of all the fruits and vegetables. i think the lab turned out this way because my hypothesis was just a guess and lemons have a lot of citric acid in them.