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← ScienceWhich outcome always occurs when a dielectric fails within resonant LC circuit?
A)Oscillator frequency drifts downwards
B)Inductor core lamination improves
C)Capacitor ESR rises sharply✓
D)Q factor of inductor improves
💡 Explanation
Dielectric breakdown causes increased current leakage, therefore the equivalent series resistance (ESR) dramatically increases via increased dissipation, because charge is lost to heat, rather than frequency drift in ideal components or increased inductive characteristics.
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