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Children can build simple basic electronic circuits on paper with a special pencil mentioned in. This eBook is good for children, students and hobbyists for learning basic physics and electronics.
Total 3 projects children can build:
1- Single LED Circuit,
2- LED and ON-OFF Switch, Circuit, and
3- LED Light Dimmer.
This eBook recommended age is 6 years to 11 years.
Pencil 'lead' is made of graphite mixed with clay. Graphite is a form of carbon, and is a conductor of electricity: the carbon atoms' electrons can move within the material. The pencil line on the paper is a continuous trail of graphite. This trail is a route along which electrons flow – from the negative to the positive terminal of the battery – forming an electric current that lights the LED. Graphite is only a fairly good conductor, and longer circuits have more resistance to current flow.
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