A motor has coils turning inside
magnetic fields, and a coil turning
inside a magnetic field induces an
emf. This emf, known as the
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A motor has coils turning inside magnetic fields, and a coil turning inside a magnetic field induces an emf. ... This emf, known as the back emf, acts against the applied voltage that's causing the motor to spin in the first place, and reduces the current flowing through the coils of the motor.
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