An electric motor converts electrical energy into mechanical motion.  
When current flows through a coil of wire, it generates a magnetic field.  
This field interacts with permanent magnets inside the motor.  
The interaction creates a force that makes the rotor spin.  
Commutators or electronics help keep the current in sync.  
The rotation can be used to drive wheels, fans, or pumps.  
Electric motors are highly efficient compared to engines.  
They can run silently with little maintenance.  
The speed and torque are easily controlled by electricity.  
They are used in household devices, robots, and vehicles.  
The principle relies on electromagnetism discovered by Faraday.