Question 1

In a series RC circuit, ET = 240 V, R = 30 Ω , and XC = 40 Ω . What is the apparent power?

Accepted Answer

A)  168.2 VA 
B)  691.2 VA 
C)  921.6 VA 
D)  1152 VA 
A)  168.2 VA 
B)  691.2 VA 
C)  921.6 VA 
D)  1152 VA D

Question 2

In a series RC circuit, ET = 240 V, R = 40 Ω , and XC = 30 Ω . What is EC?

Accepted Answer

A)  37.14 V 
B)  62.86 V 
C)  92 V 
D)  144 V 
A)  37.14 V 
B)  62.86 V 
C)  92 V 
D)  144 V D

Question 3

A series RC circuit contains two resistors and two capacitors. The resistors are 68 Ω and 56 Ω . The capacitors have capacitive reactances of 66 Ω and 33 Ω . The applied voltage is 240 V. What is the voltage drop on the 56 Ω resistor?

Accepted Answer

A)  39.83 V 
B)  49.91 V 
C)  84.70 V 
D)  102.85 V 
A)  39.83 V 
B)  49.91 V 
C)  84.70 V 
D)  102.85 V C

Question 4

A series RC circuit contains two resistors and two capacitors. The resistors are 120 Ω and 470 Ω . The capacitors have capacitive reactances of 600 Ω and 300 Ω . When calculating the circuit values, what is the total capacitive reactance?

Accepted Answer

A)  390 Ω 
B)  900 Ω 
C)  1000 Ω 
D)  1290 Ω 
A)  390 Ω 
B)  900 Ω 
C)  1000 Ω 
D)  1290 Ω

Question 5

Power factor (PF) is the ratio of the _____ power to the _____ power.

Accepted Answer

A)  apparent; true 
B)  apparent; reactive 
C)  true; apparent 
D)  reactive; apparent 
A)  apparent; true 
B)  apparent; reactive 
C)  true; apparent 
D)  reactive; apparent

Question 6

Of the different power values in an RC circuit, which is known as apparent power?

Accepted Answer

A)  VA 
B)  W 
C)  VARs 
A)  VA 
B)  W 
C)  VARs

Question 7

A series RC circuit contains two resistors and two capacitors. The resistors are 27 Ω and 56 Ω . The capacitors have capacitive reactances of 50 Ω and 40 Ω . What is angle theta?

Accepted Answer

A)  47.31° 
B)  52.75° 
C)  67.25° 
D)  72.68° 
A)  47.31° 
B)  52.75° 
C)  67.25° 
D)  72.68°

Question 8

In a capacitive circuit, the voltage leads the current by 90 electric degrees.​

Accepted Answer

A) True 
 B)False

Question 9

A capacitor that has an XC of 40 Ω is connected to a 60 Hz voltage. What is the capacitance?

Accepted Answer

A)  66.31 μ F 
B)  75.80 μ F 
C)  99.48 μ F 
D)  100.52 μ F 
A)  66.31 μ F 
B)  75.80 μ F 
C)  99.48 μ F 
D)  100.52 μ F

Question 10

A series RC circuit contains two resistors and two capacitors. The resistors are 82 Ω and 47 Ω . The capacitors have capacitive reactances of 80 Ω and 50 Ω . What is the total impedance?

Accepted Answer

A)  14.56 Ω 
B)  68.62 Ω 
C)  84.75 Ω 
D)  183.14 Ω 
A)  14.56 Ω 
B)  68.62 Ω 
C)  84.75 Ω 
D)  183.14 Ω

Question 11

In a series RC circuit, the resistor voltage is 124 V and the capacitor voltage is 167 V. What is the total voltage?

Accepted Answer

A)  111 V 
B)  143 V 
C)  208 V 
D)  240 V 
A)  111 V 
B)  143 V 
C)  208 V 
D)  240 V

Question 12

In a series RC circuit, ET = 240 V, R = 40 Ω , and XC = 30 Ω . What is ER?

Accepted Answer

A)  144 V 
B)  157.14 V 
C)  192 V 
D)  202.86 V 
A)  144 V 
B)  157.14 V 
C)  192 V 
D)  202.86 V

Question 13

Dividing a circuit's total applied voltage by the total impedance results in the total _____.

Accepted Answer

A)  current 
B)  power 
C)  VA 
D)  VARs 
A)  current 
B)  power 
C)  VA 
D)  VARs

Question 14

​ In a series RC  circuit, total impedance is a combination of resistance and capacitive reactance.

Accepted Answer

A) True 
 B)False

Question 15

In a series RC circuit, ET = 240 V, R = 500 Ω , and XC = 500 Ω . What is the true power?

Accepted Answer

A)  28.8 W 
B)  57.62 W 
C)  64.4 W 
D)  70.72 W 
A)  28.8 W 
B)  57.62 W 
C)  64.4 W 
D)  70.72 W

Question 16

The _____ of a circuit is the cosine of the phase angle.

Accepted Answer

A)  watts 
B)  power factor 
C)  VARs 
D)  volt-amperes 
A)  watts 
B)  power factor 
C)  VARs 
D)  volt-amperes

Question 17

A series RC circuit has two resistors and two capacitors. The resistors dissipate 9 W and 15 W. The capacitive powers are 18 VARs and 9 VARs. The applied voltage is 277 V. What is the circuit current?

Accepted Answer

A)  7.67 A 
B)  7.67 mA 
C)  130.4 A 
D)  130.4 mA 
A)  7.67 A 
B)  7.67 mA 
C)  130.4 A 
D)  130.4 mA

Question 18

A series RC circuit contains two resistors and two capacitors. The resistors are 39 Ω and 56 Ω . The capacitors have capacitive reactances of 80 Ω and 40 Ω . When calculating the circuit values, what is the total resistance?

Accepted Answer

A)  25 Ω 
B)  95 Ω 
C)  125 Ω 
D)  130 Ω 
A)  25 Ω 
B)  95 Ω 
C)  125 Ω 
D)  130 Ω

Question 19

In a series RC circuit, apparent power can be calculated by _____.

Accepted Answer

A)  ET × I 
B)  ER × I 
C)  EC × I 
A)  ET × I 
B)  ER × I 
C)  EC × I

Question 20

A series RC circuit has a resistance of 155 Ω and a capacitive reactance of 270 Ω . What is angle theta?

Accepted Answer

A)  44.97 ° 
B)  55.03 ° 
C)  60.14 ° 
D)  89.86 ° 
A)  44.97 ° 
B)  55.03 ° 
C)  60.14 ° 
D)  89.86 °

Exam 22: Resistive Capacitive Series Circuits

In a series RC circuit, ET = 240 V, R = 30 Ω , and XC = 40 Ω . What is the apparent power?

In a series RC circuit, ET = 240 V, R = 40 Ω , and XC = 30 Ω . What is EC?

A series RC circuit contains two resistors and two capacitors. The resistors are 68 Ω and 56 Ω . The capacitors have capacitive reactances of 66 Ω and 33 Ω . The applied voltage is 240 V. What is the voltage drop on the 56 Ω resistor?

A series RC circuit contains two resistors and two capacitors. The resistors are 120 Ω and 470 Ω . The capacitors have capacitive reactances of 600 Ω and 300 Ω . When calculating the circuit values, what is the total capacitive reactance?

Power factor (PF) is the ratio of the _____ power to the _____ power.

Of the different power values in an RC circuit, which is known as apparent power?

A series RC circuit contains two resistors and two capacitors. The resistors are 27 Ω and 56 Ω . The capacitors have capacitive reactances of 50 Ω and 40 Ω . What is angle theta?

In a capacitive circuit, the voltage leads the current by 90 electric degrees.​

A capacitor that has an XC of 40 Ω is connected to a 60 Hz voltage. What is the capacitance?

A series RC circuit contains two resistors and two capacitors. The resistors are 82 Ω and 47 Ω . The capacitors have capacitive reactances of 80 Ω and 50 Ω . What is the total impedance?

In a series RC circuit, the resistor voltage is 124 V and the capacitor voltage is 167 V. What is the total voltage?

In a series RC circuit, ET = 240 V, R = 40 Ω , and XC = 30 Ω . What is ER?

Dividing a circuit's total applied voltage by the total impedance results in the total _____.

​ In a series RC circuit, total impedance is a combination of resistance and capacitive reactance.

In a series RC circuit, ET = 240 V, R = 500 Ω , and XC = 500 Ω . What is the true power?

The _____ of a circuit is the cosine of the phase angle.

A series RC circuit has two resistors and two capacitors. The resistors dissipate 9 W and 15 W. The capacitive powers are 18 VARs and 9 VARs. The applied voltage is 277 V. What is the circuit current?

A series RC circuit contains two resistors and two capacitors. The resistors are 39 Ω and 56 Ω . The capacitors have capacitive reactances of 80 Ω and 40 Ω . When calculating the circuit values, what is the total resistance?

In a series RC circuit, apparent power can be calculated by _____.

A series RC circuit has a resistance of 155 Ω and a capacitive reactance of 270 Ω . What is angle theta?

Atomic Structure

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In a series RC circuit, E_T = 240 V, R = 30 Ω , and X_C = 40 Ω . What is the apparent power?

In a series RC circuit, E_T = 240 V, R = 40 Ω , and X_C = 30 Ω . What is E_C?

Power factor (PF) is the ratio of the _ power to the _ power.

In a capacitive circuit, the voltage leads the current by 90 electric degrees.

A capacitor that has an X_C of 40 Ω is connected to a 60 Hz voltage. What is the capacitance?

In a series RC circuit, E_T = 240 V, R = 40 Ω , and X_C = 30 Ω . What is E_R?

In a series RC circuit, total impedance is a combination of resistance and capacitive reactance.

In a series RC circuit, E_T = 240 V, R = 500 Ω , and X_C = 500 Ω . What is the true power?