My results:

Voltage of our potato – 0.2

Voltage of our apple – 0.3

Voltage of our lemon – 0.8

Voltage of our orange – 0.4

As you can clearly see the lemon brought in the most amount of volts by far. This is proving that my hypothesis was correct.

Photos :

Explanation :

The reason that a lemon was the best conductor of electricity in the case is because a lemon contains citric acid and this is good because the negatively charged electrons are able to flow within the acid which makes it a conductor. Some observations that my group and I had were that some of the other groups in our class discovered that the potato brought in more voltage than their lemon. This is a bit odd because ours brought in the least amount of voltage out of the four fruits and vegetables. We. also noticed that our potato looked a little bit older and mushier than the others and that could be the reason why it didn’t contain in as voltage as the ones from the other groups.

Here is a photo of the group. that was able to turn on the LED light with their fruits and vegetables.