Question 1

In an RC parallel circuit, ET = 240 V, R = 4 kΩ, and XC = 3.3 kΩ. What is IR?

Accepted Answer

A)  32.88 mA 
B)  46.28 mA 
C)  60 mA 
D)  72.72 mA 
A)  32.88 mA 
B)  46.28 mA 
C)  60 mA 
D)  72.72 mA C

Question 2

In an RC parallel circuit, ET = 120 V, R = 300 Ω, and XC = 400 Ω. What is P?

Accepted Answer

A)  20.57 W 
B)  36 W 
C)  48.8 W 
D)  58 W 
A)  20.57 W 
B)  36 W 
C)  48.8 W 
D)  58 W B

Question 3

In an RC parallel circuit, the current flow through the capacitor will lead both the resistive current and applied voltage by .

Accepted Answer

A)  60° 
B)  90° 
C)  180° 
D)  360° 
A)  60° 
B)  90° 
C)  180° 
D)  360° B

Question 4

In an RC parallel circuit, ET = 240 V, R = 30 Ω, and XC = 60 Ω. What is the phase angle (angle theta)?

Accepted Answer

A)  26.57° 
B)  30° 
C)  63.43° 
D)  90° 
A)  26.57° 
B)  30° 
C)  63.43° 
D)  90°

Question 5

In an RC parallel circuit, ET = 208 V, R = 68 kΩ, and XC = 56 kΩ. What is the phase angle (angle theta)?

Accepted Answer

A)  39.47° 
B)  40° 
C)  44.56° 
D)  50.53° 
A)  39.47° 
B)  40° 
C)  44.56° 
D)  50.53°

Question 6

In an RC parallel circuit, ET = 277 V, R = 82 kΩ, and XC = 33 kΩ. What is the apparent power?

Accepted Answer

A)  2.33 VA 
B)  2.51 VA 
C)  2.93 VA 
D)  3.26 VA 
A)  2.33 VA 
B)  2.51 VA 
C)  2.93 VA 
D)  3.26 VA

Question 7

In an RC parallel circuit, ET = 240 V, R = 1000 Ω, and XC = 1500 Ω. What is the apparent power?

Accepted Answer

A)  38.4 VA 
B)  57.6 VA 
C)  56 VA 
D)  69.23 VA 
A)  38.4 VA 
B)  57.6 VA 
C)  56 VA 
D)  69.23 VA

Question 8

In an RC parallel circuit, ET = 240 V, R = 10 kΩ, and XC = 8.2 kΩ. What is IC?

Accepted Answer

A)  18.56 mA 
B)  29.27 mA 
C)  33.18 mA 
D)  44 mA 
A)  18.56 mA 
B)  29.27 mA 
C)  33.18 mA 
D)  44 mA

Question 9

In an RC parallel circuit, the voltage across the resistor and the voltage across the capacitor are .

Accepted Answer

A)  less than 90° out of phase with the resistor voltage lagging 
B)  in phase 
C)  less than 90° out of phase with the resistor voltage leading 
D)  180° out of phase 
A)  less than 90° out of phase with the resistor voltage lagging 
B)  in phase 
C)  less than 90° out of phase with the resistor voltage leading 
D)  180° out of phase

Question 10

In an RC parallel circuit, ET = 120 V, R = 40 Ω, and XC = 30 Ω. What is IT?

Accepted Answer

A)  5 A 
B)  6 A 
C)  7 A 
D)  8 A 
A)  5 A 
B)  6 A 
C)  7 A 
D)  8 A

Question 11

In an RC parallel circuit, ET = 480 V, R = 50 kΩ, and XC = 47 kΩ. What is the reactive power?

Accepted Answer

A)  4.90 VARs 
B)  5.36 VARs 
C)  6.38 VARs 
D)  7.61 VARs 
A)  4.90 VARs 
B)  5.36 VARs 
C)  6.38 VARs 
D)  7.61 VARs

Question 12

In an RC parallel circuit, ET = 120 V, R = 40 Ω, and XC = 30 Ω. What is the power factor?

Accepted Answer

A)  60% 
B)  80% 
C)  100% 
D)  133% 
A)  60% 
B)  80% 
C)  100% 
D)  133%

Question 13

In an RC parallel circuit, ET = 120 V, R = 3.6 kΩ, and XC = 5.6 kΩ. What is P?

Accepted Answer

A)  4 W 
B)  5.57 W 
C)  6.16 W 
D)  7 W 
A)  4 W 
B)  5.57 W 
C)  6.16 W 
D)  7 W

Question 14

In an RC parallel circuit, ET = 208 V, R = 42 kΩ, and XC = 47 kΩ. What is Z?

Accepted Answer

A)  19 kΩ 
B)  22.18 kΩ 
C)  23.03 kΩ 
D)  31.32 kΩ 
A)  19 kΩ 
B)  22.18 kΩ 
C)  23.03 kΩ 
D)  31.32 kΩ

Question 15

In an RC parallel circuit, the supply voltage is 120 V, 60 Hz. The resistance is 40 Ω and the capacitive reactance is 30 Ω. What is the capacitance of the capacitor?

Accepted Answer

A)  37.89 μF 
B)  53.05 μF 
C)  66.31 μF 
D)  88.42 μF 
A)  37.89 μF 
B)  53.05 μF 
C)  66.31 μF 
D)  88.42 μF

Question 16

In an RC parallel circuit, ET = 120 V, R = 420 Ω, and XC = 330 Ω. What is Z?

Accepted Answer

A)  140 Ω 
B)  230 Ω 
C)  259.62 Ω 
D)  534.13 Ω 
A)  140 Ω 
B)  230 Ω 
C)  259.62 Ω 
D)  534.13 Ω

Question 17

In an RC parallel circuit, ET = 240 V, R = 40 Ω, and XC = 30 Ω. What is IR?

Accepted Answer

A)  3.42 A 
B)  4.8 A 
C)  4 A 
D)  6 A 
A)  3.42 A 
B)  4.8 A 
C)  4 A 
D)  6 A

Question 18

In an RC parallel circuit, ET = 240 V, R = 40 Ω, and XC = 30 Ω. What is IC?

Accepted Answer

A)  3.42 A 
B)  6 A 
C)  4.8 A 
D)  8 A 
A)  3.42 A 
B)  6 A 
C)  4.8 A 
D)  8 A

Question 19

In an RC parallel circuit, the amount of phase angle shift depends on the ratio of the amount of .

Accepted Answer

A)  resistance to capacitance 
B)  watts to volt-amperes 
C)  capacitance to voltage 
D)  VARs to volt-amperes 
A)  resistance to capacitance 
B)  watts to volt-amperes 
C)  capacitance to voltage 
D)  VARs to volt-amperes

Question 20

In an RC parallel circuit, ET = 240 V, R = 500 Ω, and XC = 470 Ω. What is the reactive power?

Accepted Answer

A)  59.38 VARs 
B)  83.94 VARs 
C)  122.55 VARs 
D)  215.2 VARs 
A)  59.38 VARs 
B)  83.94 VARs 
C)  122.55 VARs 
D)  215.2 VARs

Exam 23: Resistive-Capacitive Parallel Circuits

In an RC parallel circuit, ET = 240 V, R = 4 kΩ, and XC = 3.3 kΩ. What is IR?

In an RC parallel circuit, ET = 120 V, R = 300 Ω, and XC = 400 Ω. What is P?

In an RC parallel circuit, the current flow through the capacitor will lead both the resistive current and applied voltage by .

In an RC parallel circuit, ET = 240 V, R = 30 Ω, and XC = 60 Ω. What is the phase angle (angle theta)?

In an RC parallel circuit, ET = 208 V, R = 68 kΩ, and XC = 56 kΩ. What is the phase angle (angle theta)?

In an RC parallel circuit, ET = 277 V, R = 82 kΩ, and XC = 33 kΩ. What is the apparent power?

In an RC parallel circuit, ET = 240 V, R = 1000 Ω, and XC = 1500 Ω. What is the apparent power?

In an RC parallel circuit, ET = 240 V, R = 10 kΩ, and XC = 8.2 kΩ. What is IC?

In an RC parallel circuit, the voltage across the resistor and the voltage across the capacitor are .

In an RC parallel circuit, ET = 120 V, R = 40 Ω, and XC = 30 Ω. What is IT?

In an RC parallel circuit, ET = 480 V, R = 50 kΩ, and XC = 47 kΩ. What is the reactive power?

In an RC parallel circuit, ET = 120 V, R = 40 Ω, and XC = 30 Ω. What is the power factor?

In an RC parallel circuit, ET = 120 V, R = 3.6 kΩ, and XC = 5.6 kΩ. What is P?

In an RC parallel circuit, ET = 208 V, R = 42 kΩ, and XC = 47 kΩ. What is Z?

In an RC parallel circuit, the supply voltage is 120 V, 60 Hz. The resistance is 40 Ω and the capacitive reactance is 30 Ω. What is the capacitance of the capacitor?

In an RC parallel circuit, ET = 120 V, R = 420 Ω, and XC = 330 Ω. What is Z?

In an RC parallel circuit, ET = 240 V, R = 40 Ω, and XC = 30 Ω. What is IR?

In an RC parallel circuit, ET = 240 V, R = 40 Ω, and XC = 30 Ω. What is IC?

In an RC parallel circuit, the amount of phase angle shift depends on the ratio of the amount of .

In an RC parallel circuit, ET = 240 V, R = 500 Ω, and XC = 470 Ω. What is the reactive power?

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