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← ScienceWhich consequence results when an EMP disrupts power grids?
A)Transformer core saturation✓
B)Decreased transmission line capacitance
C)Suppressed geomagnetic induced currents
D)Increased power factor correction demand
💡 Explanation
An electromagnetic pulse induces large currents in conductors, causing magnetic fields. Transformer core saturation occurs because the core steel’s magnetic capacity is exceeded due to GICs. Therefore, saturation happens, rather than lower capacitance or suppressed currents because of excessive magnetic fields building within the transformer.
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