Which mechanism induces current flow within the metal core of a high-power transformer subjected to alternating magnetic fields?

💡 Explanation

When alternating magnetic fields pass through the transformer core, eddy currents are induced, because a changing magnetic field generates circulating electric fields per Faraday's Law. Therefore, eddy current induction heating results, rather than thermoelectric effects, piezoelectricity, or capacitive displacement, which require different energy sources or material properties.

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