RC Circuits A 47Ω resistor and a capacitor with 150Ω of capacitive reactance are in series across an ac source. The impedance, expressed in rectangular form, is Z = 47Ω – j150Ω Z = 47Ω + j150Ω Z = 197Ω Z = 103Ω Z = 47Ω – j150Ω Z = 47Ω + j150Ω Z = 197Ω Z = 103Ω 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? 12.9Ω 167Ω 73Ω 129Ω 12.9Ω 167Ω 73Ω 129Ω ANSWER DOWNLOAD EXAMIANS APP
RC Circuits When the frequency of the source voltage decreases, the impedance of a parallel RC circuit increases does not change decreases decreases to zero increases does not change decreases decreases to zero ANSWER DOWNLOAD EXAMIANS APP
RC Circuits A capacitor with 150Ω of capacitive reactance is across an ac source. The impedance, expressed in polar form, is Z = 150 –90° Ω Z = 150 angle – 90° Ω Z = 150 angle 180° Ω Z = 150 Z = 150 –90° Ω Z = 150 angle – 90° Ω Z = 150 angle 180° Ω Z = 150 ANSWER DOWNLOAD EXAMIANS APP
RC Circuits For a certain load, the true power is 150 W and the reactive power is 125 VAR. The apparent power is 275 W 195.2 W 25 W 19.52 W 275 W 195.2 W 25 W 19.52 W ANSWER DOWNLOAD EXAMIANS APP
RC Circuits A resistor and a capacitor are in series across a 20 V ac source. Circuit impedance is 4.33 k. Current flow in the circuit is 4.6 mA 92 mA 9.2 mA 460 mA 4.6 mA 92 mA 9.2 mA 460 mA ANSWER DOWNLOAD EXAMIANS APP
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