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 = 103Ω Z = 197Ω Z = 47Ω + j150Ω Z = 47Ω – j150Ω Z = 103Ω Z = 197Ω Z = 47Ω + j150Ω Z = 47Ω – j150Ω ANSWER DOWNLOAD EXAMIANS APP
RC Circuits An ac circuit consists of a resistor and a capacitor. To increase the phase angle above 45°, the following condition must exist: R < XC R > XC R = XC R = 5XC R < XC R > XC R = XC R = 5XC 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 130 mW 84.5 mW 13 mW 845 mW 130 mW 84.5 mW 13 mW 845 mW ANSWER DOWNLOAD EXAMIANS APP
RC Circuits What is the value of the hypotenuse of a right triangle whose sides are 12 and 18? 4.24 21.63 2.16 3.46 4.24 21.63 2.16 3.46 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° 734 and θ = –38.9° 73.4 and θ = –19.5° 707 and θ = –19.5° 2121 and θ = –19.5° 734 and θ = –38.9° 73.4 and θ = –19.5° 707 and θ = –19.5° 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 0 Hz 12 kHz 6 kHz 18 kHz 0 Hz 12 kHz 6 kHz 18 kHz ANSWER DOWNLOAD EXAMIANS APP
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