What type of device converts electrical energy into mechanical energy?

An electric motor is a device that converts electrical energy into mechanical energy. This process involves the interaction of magnetic fields and electric currents to produce motion. When an electric current passes through coils of wire within the motor, it generates a magnetic field that interacts with permanent magnets or other coils in the motor assembly. This interaction causes the motor's rotor to turn, which is the mechanical output of the system.

In contrast, a generator performs the reverse function by converting mechanical energy into electrical energy. A transformer is used to change the voltage of alternating current (AC) electricity without converting energy types. A battery stores chemical energy and converts it to electrical energy when needed, rather than converting electrical energy into mechanical energy. Thus, the electric motor stands out as the correct answer since it specifically performs the conversion of electrical energy into mechanical energy.