At the last class, we all went to doing other teams science experiment, what I chose to did and interested about is the fruit battery experiment.

The experiment they chose was to create a battery out of a fruit with lemons, limes, oranges, bananas, and through the different materials, like zinc, copper, and iron as electrical conductor to measure the voltage that different fruits  distribute.

on the experiment, I test out that copper was the least conductive metal, only come out with about 0.1 voltages with lemon.  The galvanized (zinc)  brings the highest about 0.84 voltages in an orange. and banana also produced high numbers on zinc, which is about 0.8, near the orange.

so I think the conclusion is the voltages generate is depend on the fruits acid.