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← ScienceWhich outcome occurs when a variable capacitor's plates short-circuit?
A)Oscillator frequency locks to fixed
B)Circuit impedance drops abruptly to zero✓
C)Reactive power ramps slowly upward
D)Dielectric breakdown spreads gradually onwards
💡 Explanation
A short-circuit in a capacitor results in impedance dropping to zero because charge displacement stops, and **capacitive reactance** is shorted out. Therefore, the impedance plummets to zero, rather than oscillation locking or power ramping, different failures causing these.
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