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 When the frequency of the voltage applied to a series RC circuit is decreased, the impedance increases doubles remains the same decreases increases doubles remains the same decreases ANSWER DOWNLOAD EXAMIANS APP
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 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 845 mW 13 mW 84.5 mW 130 mW 845 mW 13 mW 84.5 mW ANSWER DOWNLOAD EXAMIANS APP
RC Circuits What is the angular difference between +j4 and –j4? 180° 90° 30° 270° 180° 90° 30° 270° 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 0 Hz 6 kHz 18 kHz 12 kHz 0 Hz 6 kHz 18 kHz ANSWER DOWNLOAD EXAMIANS APP
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