Elenco Snaptricity&reg - Manual (Page 79)

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Cola Power Project #69
1mA
If you want to watch
this for a while without holding it,
place the electrode between two
2-snaps as shown here.
Cola-flavored soda is lightly acidic.The acid is similar
to the material used in some types of batteries, though
not nearly as strong.
The acid in the cola will react with the copper and zinc
electrodes to make an electric current, just like the AA
batteries that run your Snaptricity
® kit or the larger
battery in your family car. As some of the acid in the
soda is neutralized, the current produced drops.
Description
Read the current on the meter. You may switch the
meter to the 5V scale to also measure the voltage
produced, but the voltage may be too small to
measure accurately with a simple meter like M5.
Try replacing the cola with other flavors and compare
them.
Throw away the soda used in this project. Wash off the
electrodes.
Operation
Set the meter (M5) to the 1mA scale and connect the
jumper wires to it. Hold the metal snap of the jumper
wires to the electrodes (red to copper), and place them
in a cup of cola soda.
Assembly
You can buy a cola-powered clock.