Concept: Eddy currents are induced in conductors by changing magnetic fields.Explanation:1. When a conductor (like a metal) is exposed to a changing magnetic field, the magnetic flux through the conductor changes.2. According to Faraday's law of electromagnetic induction, this changing flux induces an electromotive force (EMF).3. This induced EMF drives circulating currents within the conductor, known as eddy currents.Answer: A metal is kept in a varying magnetic field.
