1 .		When the frequency of the voltage applied to a series RC circuit is decreased, the impedance [Hint]   increases   decreases   remains the same   doubles
2 .		When the frequency of the voltage applied to a series RC circuit is increased, the phase angle [Hint]   increases   decreases   remains the same   becomes erratic
3 .		In a series RC circuit, when the frequency and the resistance are halved, the impedance [Hint]   doubles   is halved   is reduced to one-fourth   cannot be determined without values
4 .		In a series RC circuit, 12 V(rms) is measured across the resistor and 15 V(rms) is measured across the capacitor. The rms source voltage is [Hint]   3 V   27 V   19.2 V   1.9 V
5 .		The voltages in Problem 4 are measured at a certain frequency. To make the capacitor voltage greater than the resistor voltage, the frequency [Hint]   must be increased   must be decreased   is held constant   has no effect
6 .		An ac circuit consists of a resistor and a capacitor. To increase the phase angle above 45°, the following condition must exist: [Hint]   R = XC   R > XC   R < XC   R = 5XC
7 .		When the frequency of the source voltage decreases, the impedance of a parallel RC circuit [Hint]   increases   decreases   does not change   decreases to zero
8 .		In a parallel RC circuit, there is 100 mA through the resistive branch and 100 mA through the capacitive branch. The total rms current is [Hint]   200 mA   100 mA   282 mA   141 mA
9 .		A 2 k resistor and a 0.002 F capacitor are in series across an ac source. Current in the circuit is 6.50 mA. The true power is [Hint]   84.5 mW   845 mW   13 mW   130 mW
10 .		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 [Hint]   9.2 mA   92 mA   4.6 mA   460 mA
11 .		For a certain load, the true power is 150 W and the reactive power is 125 VAR. The apparent power is [Hint]   19.52 W   195.2 W   275 W   25 W
12 .		A 6 kHz sinusoidal voltage is applied to a series RC circuit. The frequency of the voltage across the resistor is [Hint]   0 Hz   12 kHz   6 kHz   18 kHz
13 .		A 47 resistor and a capacitor with a capacitive reactance of 120 are in series across an ac source. What is the circuit impedance, Z? [Hint]   129   12.9   167   73
14 .		If the voltage source in Problem 13 has an rms value of 60 V, how much current flows in the circuit? [Hint]   46.5 mA   465 mA   359 mA   821 mA
15 .		A capacitor with 150 of capacitive reactance is across an ac source. The impedance, expressed in polar form, is [Hint]   Z = 150   Z = 15090°   Z = 150 -90°   Z = 150180°
16 .		A 47 resistor and a capacitor with 150 of capacitive reactance are in series across an ac source. The impedance, expressed in rectangular form, is [Hint]   Z = 47 + j150   Z = 47 - j150   Z = 197   Z = 103
17 .		Referring to Problem 16, the impedance, expressed in polar form, is [Hint]   157.2072.6°   4772.6°   15072.6°   157.2022.6°
18 .		A 12 k resistor is in series with a 0.02 F capacitor across a 1.2 kHz ac source. If the current is expressed in polar form as I = 0.30° mA, what is the source voltage expressed in polar form? [Hint]   45.6 V   411.3 V   0.411 V   4.11 V
19 .		Referring to Problem 18, which statement is true? [Hint]   voltage lags current by 28.9°   current lags voltage by 28.9°   current and voltage are in phase   voltage lags current by 2.89°
20 .		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? [Hint]   73.4 and θ = -19.5°   707 and θ = -19.5°   734 and θ = -19.5°   734 and θ = -38.9°
21 .		A 120 resistor is in parallel with a capacitor with a capacitive reactance of 40 . Both components are across a 12 V ac source. What is the magnitude of the total impedance? [Hint]   37.9   3.7   14,400   4,800
22 .		Referring to Problem 21, what is the phase angle for the circuit? [Hint]   7.1°   71.5°   1.8°   18.4°
23 .		A 470 resistor and a 0.2 F capacitor are in parallel across a 2.5 kHz ac source. The admittance, Y, in rectangular form, is [Hint]   212   2.12 mS + j3.14 mS   3.14 mS + j2.12 mS   318.3
24 .		Referring to Problem 23, what is the admittance, Y, in polar form? [Hint]   3.785.9°   3.7834°   37.855.9°   37.834°
25 .		Referring to Problem 23, what is the circuit impedance, Z? [Hint]   264 -55.9°   264 -34°   2.64 -55.9°   2.64 -34°