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What is Resonance in Parallel RL-C Circuits about?

- The document discusses resonance in a parallel RL-C circuit. It defines resonance as occurring when the susceptance of the circuit is zero. - The resonant frequency is derived as f0 = 1/2π√(1/LC - R2/L2). The impedance at resonance is Z0 = L/CR and current is maximum. - At resonance, the impedance is purely resistive so the voltage and current are in phase, giving a power factor of 1. Impedance is lowest at resonance and increases as frequency deviates from f0.

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