An electric motor is an electromagnetic device that converts or transmits electrical energy according to the laws of electromagnetic induction, or converts one form of electrical energy into another form of electrical energy. An electric motor converts electrical energy into mechanical energy (commonly known as a motor) and a generator converts mechanical energy into electrical energy. The electric motor is represented in the circuit by the letter "M" (the old standard was "D"). Its main function is to produce driving torque as a power source for appliances or various machines.
