Electromagnetic train

morreale Monday 15 of December, 2014
The Kid Should See This website has posted this neat electromagnetic train that is easily built. Neodymium magnets are attached to each end of an AA batter, and fed into a coil of bare copper wire. The magnets are conductive and cause current to flow in the copper wire which creates a magnetic field around the magnet battery assembly. A force develops between the fixed magnets and the field produced in the copper wire by the battery, and propels the battery magnet assembly through the coil of copper wire.