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← ScienceWhich risk increases due to dielectric relaxation when an alternating voltage is applied to a cable's insulation?
A)Increased corona discharge events
B)Premature cable capacitance failure
C)Elevated cable core temperature✓
D)Resonance within transmission path
💡 Explanation
Cable temperature rises because dielectric relaxation causes energy dissipation in the form of heat as polarization lags behind the alternating electric field. Therefore, cable core temperature increases, rather than corona discharge, because the applied voltage contributes to heating; not ionization.
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