What is the net impedance of a series resonant circuit___________?
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Answer: A. minimum
Explanation
At series resonance inductive reactance and capacitive reactance cancel each other completely. This leaves only the pure ohmic resistance to restrict the flowing electrical current. Consequently the overall impedance drops to its lowest possible value within the circuit. Impedance combines resistance and reactance into a single complex opposition measurement. Inductive reactance increases with frequency while capacitive reactance decreases as frequency rises. Resonance occurs when both reactances have identical magnitudes at a specific frequency.
Radio receivers exploit this minimal impedance property to select specific broadcast frequencies easily. Tuning circuits rely heavily on series resonance to maximize signal reception efficiency. Engineers must account for high current surges produced during accidental resonance conditions. Maximum impedance occurs exclusively during parallel resonance rather than series resonance configurations. Zero impedance would require an ideal superconductor lacking any intrinsic resistance whatsoever. Option none of the above is incorrect because minimum accurately describes the impedance state.
- Subject
- Engineering
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- Electrical Engineering
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- —
- Difficulty
- medium
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