Monday, 29 December 2014

CircuiTricks ~ Simplest way to make simple circuits with JUST a pencil

I was sitting with my younger brother trying to explain him what is "conductivity", how a circuit gets completed and electrons get a path to flow, how does resistance increases with length, increases with increase in area and all the other stuff..

Boiling down everything to equations can be boring.. But I managed to get all this through his head that how does circuits work by this very simple concept...

Not stretching too long, here I will show you what all you can do with a "9B" graphite pencil.

Have a look:

Well, isn't this quite simple?

Take up a pencil, button cells and a LED..
When you do this by yourself, you will realize that the intensity decreases with increase in length of the path drawn. And if you draw out a broad path, intensity will increase.

That is because: R = (Resistivity)*(length)/Area.

The only trick here is the 9B pencil that gives a conducting path!!

So, go ahead and make your cool stuff with CircuiTricks..

To know more about CircuiTricks, visit

And also, if you have cool ideas to make things with Pencil and electronics, write to us at and you can get a FREE CircuiTricks kit or a CircuiTricks Tshirt..

Go ahead, and show your creativity..

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