Founder- EduMation
Objective
· To generate 3.5V from a series connection of 4 potatoes or 4 lemons
· To light a small Light Emitting Diode (LED)
Components
· 4 fresh lemons or potatoes
· 4 galvanized nails (steel nail coated with zinc)
· 4 pennies (or any piece of copper)
· 5 pieces of wire
· Calculator
· Small LED or a small lamp from any baby toy
Brief Description
Any battery consists of these three: positive terminal, negative terminal and an acid.
A lemon contains citric acid. The steel nail (ZINC) is the negative (-) terminal and the penny (COPPER) is the positive terminal (-).
The chemical reaction inside the lemon causes the electrons to move from the zinc to the copper.
Procedure
1. In each lemon, insert a penny and a steel nail at the extreme sides of the lemon.
2. Connect a wire between the nail of lemon 1 to the penny of lemon 2, the nail of lemon 2 to the penny of lemon 3 and the nail of lemon 3 to the penny of lemon 4. This is called a series connection.
CLICK HERE to see all picture in sequence
CLICK HERE to see video demonstration
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