How to Create a Lemon Battery
This video provides an example of how to create a battery
made from a lemon.
A lemon battery mainly is a device used in an experiment
proposed in many science textbooks around the world.
It consists of inserting two different metallic objects, for
example a galvanized nail and a copper coin, into a lemon. These
two objects work as electrodes, causing an electrochemical
reaction which generates a small potential difference.
The aim of this experiment is to show students how batteries
work. After the battery is assembled, a multimeter can be used
to check the generated voltage. In order for a more visible
effect to be produced, a few lemon cells connected in series can
be used to power a standard LED. Flashlight bulbs are generally
not used because the lemon battery cannot produce the amount of
current required to light such bulbs.
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