Which outcome occurs when ferromagnetic core transformer operates above its Curie temperature?

💡 Explanation

When a ferromagnetic core heats above the Curie temperature, it loses its ferromagnetic properties because thermal energy randomizes the magnetic domains, greatly decreasing the material’s permeability and thus, electromagnetic induction. Therefore, induction decreases, rather than hysteresis increase which relies on static field, insulation issues requiring voltage, or resistivity changes requiring temperature shifts.

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