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RC CIRCUITS

RC Circuits
A capacitor with 150Ω of capacitive reactance is across an ac source. The impedance, expressed in polar form, is

Z = 150 angle – 90° Ω
Z = 150
Z = 150 –90° Ω
Z = 150 angle 180° Ω

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RC Circuits
When the frequency of the voltage applied to a series RC circuit is decreased, the impedance

doubles
decreases
remains the same
increases

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