RC Circuits The voltages in Problem 4 are measured at a certain frequency. To make the capacitor voltage greater than the resistor voltage, the frequency must be decreased is held constant has no effect must be increased must be decreased is held constant has no effect must be increased 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 25 W 195.2 W 19.52 W 275 W 25 W 195.2 W 19.52 W ANSWER DOWNLOAD EXAMIANS APP
RC Circuits A 2 kΩ resistor and a 0.002 μF capacitor are in series across an ac source. Current in the circuit is 6.50 mA. The true power is 13 mW 84.5 mW 130 mW 845 mW 13 mW 84.5 mW 130 mW 845 mW 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 92 mA 4.6 mA 9.2 mA 460 mA 92 mA 4.6 mA 9.2 mA 460 mA 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 Z = 150 angle – 90° Ω Z = 150 angle 180° Ω Z = 150 –90° Ω Z = 150 Z = 150 angle – 90° Ω Z = 150 angle 180° Ω Z = 150 –90° 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? 707 and θ = –19.5° 73.4 and θ = –19.5° 2121 and θ = –19.5° 734 and θ = –38.9° 707 and θ = –19.5° 73.4 and θ = –19.5° 2121 and θ = –19.5° 734 and θ = –38.9° ANSWER DOWNLOAD EXAMIANS APP
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