An electric motor exists in almost every electrical appliance in a household. An electric motor carries the properties of electromagnetism, as the electric energy is converted into mechanical energy by these machines, and though the principle behind the interaction of an electric current and magnetic field is technical, building this link is quite fascinating and easy. With a few simple tools, you can make an electric motor in your home to have fun with your kids or create a fun science project for them. The main concept behind this experiment is to show a rotational force creation when a rod with an electrical current is placed within a magnetic field.

Things you will need

  • D-battery
  • Thin marker
  • Insulated 22G wire
  • Small magnet
  • 2 metal sewing needles (with large eyes to fit the wire)
  • Modeling clay
  • Knife
  • Electrical tape

 

Procedure

  1. Wrap the wire tightly from the center, and wrap it around the marker 30 times.

 

  1. Now slide the coil off the marker.

 

  1. Wrap the loose end of the wire over the coil twice so that the coils are held together. Pull the loose ends away from the loop now.

 

  1. Remove the wire insulation on the free ends of the coil with the knife. The exposed wire has to face the same direction at both ends.

  1. Thread the wire into the needle’s eye, keeping the wire as straight as possible. Do the same at the other end.

 

  1. Place the D-battery flat on the surface.

 

  1. Place some modeling clay on both the sides of the battery for it to remain in one place.

 

  1. Put the needles upright next to the two terminals of the battery, ensuring each side touches a terminal of it.

 

  1. Also place some modeling clay on the sharp ends of the needle.

 

  1. Use the electrical tape to fasten the needles to the batter ends. The coil will be hanging right above the battery.

 

  1. Now tap the magnet to the side of the battery that comes right under the coil.

 

  1. Turn the coil and see the coil continue spinning on its own!