A magnet exerts a force on current-carrying wire.

This simple device shows that when an electrical current flows through a magnetic field, a force is exerted on the current. This force can be used to make an electric motor.

4 to 6 small disk magnets. (5 minutes or [...]

Required Materials

18-gauge copper wire (smaller gauge will work too, but 18-gauge is stiffer)
Wire clippers
Steel paper clip (Some people find that a 2-inch strip of zinc works better)
Sheet of coarse sandpaper
Lemon (U can even use potatoes)
Help from an older friend or an adult

Experimental Procedure

Have your older friend or an adult strip 2 inches of insulation off [...]