Rotor (electric)
File:Stator and rotor by Zureks.JPG
Rotor (left) of an electric motor
A rotor is the part of an electric machine (motor or generator) that rotates. It rotates because of the torque developed by wires and magnetic field inside the machine.
Rotor (electric) Media
Rotor from Hoover Dam generator
de:Schenkelpolmaschine