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Which magnetic field consequence occurs when a superconducting toroidal transformer core exceeds its critical current?

A)Quench propagation via resistive heating
B)Harmonic distortion from core saturation
C)Eddy current loss increases exponentially
D)Dielectric breakdown across winding insulation

💡 Explanation

When the critical current is exceeded in the superconducting core, a quench occurs due to the Meissner effect failing, initiating resistive heating which rapidly propagates, causing the superconductor to become normally conducting. Therefore quench propagation results, rather than distortion, loss increase, dielectric breakdown which are associated with different mechanisms.

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