A spinning magnetic field that never slips is what turns an EV’s wheels.
Copper stator windings create it at exactly nₛ = 120f/P revolutions per minute. Permanent magnets on the rotor lock onto that field, while the Ampere force |Fₐ| = |B| I ℓ sin α produces the torque.
The same lockstep mathematics that once lived only in textbooks now moves tons of metal in silence.