The electromagnetic power brake comprises three main components: a coil, a stator and a rotor. When electricity is supplied to the brake, the magnetic field inside the coil begins to fluctuate depending on the ratio of the current intensity. In the end, these magnetic field fluctuations affect the viscosity of the magnetic powder between the rotor and the stator. When electrical power is applied to the coil, the powder particles line up along the lines of force of the magnetic field binding the rotor and stator together. This produces friction, and braking ensues. However, when the current is disconnected, centrifugal force presses the powder against the stator. This subsequently releases the rotor, which can then turn freely once more.