A series circuit consists of an ac source of variable frequency, a 120 resistor,

Question

A series circuit consists of an ac source of variable frequency, a 120 resistor, a 1.30 capacitor, and a 4.60 inductor. Part A Find the impedance of this circuit when the angular frequency of the ac source is adjusted to the resonance angular frequency. Z = -------------- ohm Part B Find the impedance of this circuit when the angular frequency of the ac source is adjusted to twice the resonance angular frequency. Z = ----------------- ohm Part C Find the impedance of this circuit when the angular frequency of the ac source is adjusted to half the resonance angular frequency. Z = ------------------- ohm

Explanation / Answer

a> impedance = 120 ohms

b> w0 = 1/LC = 0.41

w = 2w0 = 0.82

impedance = 120.03 ohm

c> impedance = 120.03 ohm

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