How do you light up a light bulb with either a orange, lemon, lime, or potato?
I am doing a 5th grade science fair project. I need a simple science project that lights up a light bulb with either a orange, lemon, lime or potato. The science projects of the lemon, lime, orange or potato need to be similar that you tell me. my science project has all of the fruits that I mentioned. my question is which fruit or potato keeps the light bulb lit up the longest?