What creates the magnetic field in a squirrel-cage induction motor?

The magnetic field in a squirrel-cage induction motor is created primarily by the current flowing through the stator winding. When alternating current (AC) is supplied to the stator winding, it generates a rotating magnetic field. This is fundamental for the operation of the induction motor, as the stator's magnetic field interacts with the rotor.

In an induction motor, the rotor does not have a direct electrical connection to the power supply; instead, it relies on the magnetic field produced by the stator. This magnetic field induces a current in the rotor, which generates its own magnetic field. The interaction between the stator's rotating magnetic field and the rotor's magnetic field produces torque, enabling the rotor to turn.

Current flowing through the rotor windings is not applicable in a squirrel-cage motor because the rotor consists of conductive bars shorted at the ends, forming a closed loop; it does not have windings per se like in other types of induction motors. Direct current supplied to the rotor also doesn't apply since squirrel-cage motors operate on alternating current. Electricity from the power supply is a generalized statement and does not specifically address how the magnetic field is created. Thus, the correct identification of the stator winding current is essential to understanding the operation of