The power and size of DC motors vary, and according to different mechanisms, they can be used for electric hoists and elevators, electric cars, and toys. A DC motor consists of two basic parts: the armature and stator. The stator is the fixed part of the motor, and the armature is the rotating part. In addition to using coils, DC motors also use a fixed magnet group in the stator, where current flows through the circuit of the wires, resulting in aligned electromagnetic fields. One or more coil windings of the insulated wire are wrapped around the iron core of the motor to concentrate the magnetic field. The winding of the insulated wire is connected to the rotating electrical switch (commutator), which continues to apply current to the coil winding. The rotating electrical switch allows each armature coil to be energized, resulting in torque or stable rotational force. After sequentially opening and closing the coils, a magnetic field is generated that interacts with different areas of the fixed magnet, resulting in torque. These basic working principles allow direct current motors to convert electrical energy from direct current into mechanical energy that can be used for propulsion equipment, all of which are achieved through rotational motion.