By Anupum Pant
To make a simple electric train you just need a very long copper wire, a pencil cell and a few magnets. Making the train itself is as simple as sticking the magnets at both the ends of the cell. The track is the wound copper wire with an internal radius that is just enough to fit the “train”. If you make it into a loop and send in your train, it just keeps running till the cell runs out.