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Which consequence results when ferromagnetic shielding saturates around a high-voltage cable?

A)Increased eddy current heating occurs
B)Dielectric breakdown strength recovers
C)Cable impedance becomes purely resistive
D)Corona discharge proximity threshold lowers

💡 Explanation

Increased eddy current heating occurs because exceeding the saturation magnetization of the ferromagnetic shield induces a nonlinear response where additional external magnetic flux bypasses the shielding, therefore it dumps energy via eddy dissipation rather than maintaining effective shielding.

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