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 9.2 mA 92 mA 460 mA 4.6 mA 9.2 mA 92 mA 460 mA 4.6 mA ANSWER DOWNLOAD EXAMIANS APP
RC Circuits In a series RC circuit, when the frequency and the resistance are halved, the impedance is halved cannot be determined without values doubles is reduced to one-fourth is halved cannot be determined without values doubles is reduced to one-fourth ANSWER DOWNLOAD EXAMIANS APP
RC Circuits In the complex plane, the number 14 – j5 is located in the first quadrant third quadrant fourth quadrant second quadrant first quadrant third quadrant fourth quadrant second quadrant 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 = 5XC R < XC R = XC R > XC R = 5XC R < XC R = XC R > XC ANSWER DOWNLOAD EXAMIANS APP
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 is held constant must be increased must be decreased has no effect is held constant must be increased must be decreased has no effect ANSWER DOWNLOAD EXAMIANS APP
RC Circuits A 120Ω resistor is in parallel with a capacitor with a capacitive reactance of 40 Ω. Both components are across a 12 V ac source. What is the magnitude of the total impedance? 37.9Ω 4800Ω 3.7Ω 14400Ω 37.9Ω 4800Ω 3.7Ω 14400Ω ANSWER DOWNLOAD EXAMIANS APP
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