Electric current can be changed into a strong, rotational motion by placing a loop winding, or armature, between the two magnets. A turbine is attached to the armature. When current is applied to the armature, the magnetic field around the armature and the magnetic field between the magnets act upon each other. This causes the armature to move toward a vertical position. The commutator and the brushes are used to keep the armature spinning. As the armature rotates, the commutator reverses the electrical connection between the brushes and the armature. This reverses the magnetic field around the armature. The constantly changing electrical connection keeps the armature spinning, which causes the turbine to spin and generate electricity.