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An inductor, cried a coil or reactor an aw, is a passive twa-terminal electrical component which resists changes in electric current passin through it. It consists o a conductor such as a wire, usually woond into a coil. When a current flows through it, energy is stored temporarily in a magnetic field in the coil. When the current flowin through an inductor changes, the time-varyin magnetic field induces a voltage in the conductor, accordin tae Faraday’s law o electromagnetic induction, which oppones the chynge in current that creatit it.