The Secret Power of Eddy Currents Revealed! Eddy current braking is a fascinating application of electromagnetic principles in which a conductor moving through a magnetic field experiences a resistive force without physical contact. When a metal object, such as a train wheel or a rotor, passes through a strong magnetic field, circulating currents (called eddy currents) are induced within the conductor due to Faraday’s law of electromagnetic induction. These currents generate their own magnetic f