RC Circuits A capacitor with 150Ω of capacitive reactance is across an ac source. The impedance, expressed in polar form, is Z = 150 Z = 150 angle – 90° Ω Z = 150 –90° Ω Z = 150 angle 180° Ω Z = 150 Z = 150 angle – 90° Ω Z = 150 –90° Ω Z = 150 angle 180° Ω ANSWER DOWNLOAD EXAMIANS APP
RC Circuits A 2 k resistor is in series with a 0.015 F capacitor across a 15 kHz ac source. What is the magnitude of the total impedance and the phase angle? 2121 and θ = –19.5° 707 and θ = –19.5° 734 and θ = –38.9° 73.4 and θ = –19.5° 2121 and θ = –19.5° 707 and θ = –19.5° 734 and θ = –38.9° 73.4 and θ = –19.5° ANSWER DOWNLOAD EXAMIANS APP
RC Circuits A 47Ω resistor and a capacitor with a capacitive reactance of 120 are in series across an ac source. What is the circuit impedance, Z? 167Ω 73Ω 129Ω 12.9Ω 167Ω 73Ω 129Ω 12.9Ω ANSWER DOWNLOAD EXAMIANS APP
RC Circuits When the frequency of the source voltage decreases, the impedance of a parallel RC circuit decreases to zero does not change increases decreases decreases to zero does not change increases decreases ANSWER DOWNLOAD EXAMIANS APP
RC Circuits A 6 kHz sinusoidal voltage is applied to a series RC circuit. The frequency of the voltage across the resistor is 12 kHz 18 kHz 6 kHz 0 Hz 12 kHz 18 kHz 6 kHz 0 Hz ANSWER DOWNLOAD EXAMIANS APP
RC Circuits A positive angle of 30° is equivalent to a negative angle of –180° –60° –330° –30° –180° –60° –330° –30° ANSWER DOWNLOAD EXAMIANS APP
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