 |
Materials
 A nice juicy lemon
A plate of zinc and a plate of copper
(coins, nails of the same will do, if neither are available, then you can also proceed
with two different metals like an aluminum foil and steel)
Electrical alligator clips
An electric meter |
Why & how?
In your lemon battery, the electrons are conducted from one
metal to the other through the juice, which acts as the electrolyte. The zinc plate is the negative electrode (-) of the battery and
the copper is the positive electrode (+).
This is an example of a wet cell. The ones that you use
in your gadgets are dry cell batteries which use a powdered electrolyte, and which have a
higher voltage.
To be attempted under adult
supervision |
Stick the zinc plate on one side of the
lemon and the copper one on the other side. (Note, the two shouldn't touch) Your battery
is ready for testing.
