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← ScienceWhich risk increases when a high-intensity electromagnetic pulse (EMP) induces rapid displacement field changes through long electrical power transmission lines?
A)Reduced coronal discharge efficiency.
B)Enhanced line voltage stability.
C)Transformer core saturation onset.✓
D)Decreased cable skin effect.
💡 Explanation
Transformer core saturation increases because the EMP's rapid field changes induce large currents from Faraday's Law. These large currents drive the magnetic flux beyond the core's saturation point, therefore causing it to lose inductivity, rather than sustaining transmission.
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