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← TechnologyWhich outcome occurs when a resonant tank circuit experiences parasitic capacitance nearing designed resonant frequency?
A)Increased circulating current and heating
B)Decreased output voltage due to shunt impedance
C)Frequency shift of the resonant peak✓
D)Reduced Q-factor with increased bandwidth
💡 Explanation
When parasitic capacitance increases, the resonant frequency shifts lower because the resonance condition is defined by the inverse relationship between inductance and capacitance. Therefore, a frequency shift results, rather than higher current, lower voltage, or Q reduction, which depend on different impedance mismatches and loss mechanisms.
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