- #1
Alex Hughes
- 54
- 13
So I was messing around and made a lemon battery using a zinc nail and a copper penny. I wired 4 of these lemons together and connected it to a 5mm red LED and got around 3.7V. It came on but was dim. However, when I wire my power supply and also set it to 3.7V, it is much brighter. Now i assume this has to be because the lemon battery has much less current. I'm just curious as to why this is. If it has less current at the same voltage, this would have to mean by lemon battery circuit had more resistance correct? Where does this extra resistance come from?