Question 1

-Given the circuit in Figure , if R3 is changed to 100 Ω, the total circuit current will:

Accepted Answer

A)  increase 
B)  remain the same 
C)  decrease 
D)  double 
A)  increase 
B)  remain the same 
C)  decrease 
D)  double A

Question 2

Figure 6-7
-Given the circuit in Figure 6-7, select a minimum wattage rating for R2.

Accepted Answer

A)  5 W 
B)  1/2 W 
C)  1 W 
D)  1/4 W 
A)  5 W 
B)  1/2 W 
C)  1 W 
D)  1/4 W D

Question 3

The voltage drop across each resistance in a parallel circuit is equal to the applied voltage.

Accepted Answer

A) True 
 B)False  True

Question 4

A parallel connection provides two or more paths for current to flow.

Accepted Answer

A) True 
 B)False

Question 5

-Given the circuit in Figure , what is the total equivalent) resistance?

Accepted Answer

A)  520 Ω 
B)  6.4 kΩ 
C)  5.2 kΩ 
D)  4.7 kΩ 
A)  520 Ω 
B)  6.4 kΩ 
C)  5.2 kΩ 
D)  4.7 kΩ

Question 6

The voltage across any branch of a parallel circuit:

Accepted Answer

A)  is inversely proportional to total circuit resistance. 
B)  varies as the total current varies. 
C)  is dropped in proportion to each branch resistance. 
D)  is equally applied to all branch conductances. 
A)  is inversely proportional to total circuit resistance. 
B)  varies as the total current varies. 
C)  is dropped in proportion to each branch resistance. 
D)  is equally applied to all branch conductances.

Question 7

Figure 6-6
-Given the circuit in Figure 6-6, find the total current.

Accepted Answer

A)  0.3 A 
B)  0.02 A 
C)  0.2 A 
D)  0.3 mA 
A)  0.3 A 
B)  0.02 A 
C)  0.2 A 
D)  0.3 mA

Question 8

The general current divider equation used to find a branch current is equal to the:

Accepted Answer

A)  total resistance divided by the product of that branch resistance and the total current. 
B)  resistance total divided by that branch resistor, multiplied by the total current. 
C)  branch voltage divided by the total resistance. 
D)  branch resistance divided by the total resistance, multiplied by the total current. 
A)  total resistance divided by the product of that branch resistance and the total current. 
B)  resistance total divided by that branch resistor, multiplied by the total current. 
C)  branch voltage divided by the total resistance. 
D)  branch resistance divided by the total resistance, multiplied by the total current.

Question 9

The total power taken from the power supply, and dissipated by the resistors in a parallel circuit, is the sum of the powers dissipated by each resistor in the circuit.

Accepted Answer

A) True 
 B)False

Question 10

-Given the circuit in Figure 6-9, what is the output current Iout)?

Accepted Answer

A)  2.75 mA 
B)  1.25 mA 
C)  0.01 A 
D)  Iin/3 
A)  2.75 mA 
B)  1.25 mA 
C)  0.01 A 
D)  Iin/3

Question 11

Kirchhoff's law for parallel circuits states that the:

Accepted Answer

A)  total circuit resistance is less than the smallest branch resistor. 
B)  sum of currents into a junction is equal to the difference of all the branch currents. 
C)  sum of all branch voltages equal zero. 
D)  sum of the total currents flowing out of a junction equals the sum of the total currents flowing into that junction. 
A)  total circuit resistance is less than the smallest branch resistor. 
B)  sum of currents into a junction is equal to the difference of all the branch currents. 
C)  sum of all branch voltages equal zero. 
D)  sum of the total currents flowing out of a junction equals the sum of the total currents flowing into that junction.

Question 12

-Given the circuit in Figure 6-9, what voltage must be applied between points A and B to get the circuit current of 2.75 mA?

Accepted Answer

A)  1.43 V 
B)  4.7 V 
C)  14.3 V 
D)  2.75 V 
A)  1.43 V 
B)  4.7 V 
C)  14.3 V 
D)  2.75 V

Question 13

-Given the circuit in Figure 6-5, what is the current flowing through R2?

Accepted Answer

A)  0.5 mA 
B)  1.5 mA 
C)  1.0 mA 
D)  500 mA 
A)  0.5 mA 
B)  1.5 mA 
C)  1.0 mA 
D)  500 mA

Question 14

What is the total resistance of a 3 kΩ, 4 kΩ, and 12 kΩ resistors that are in parallel with each other?

Accepted Answer

A)  6.3 kΩ 
B)  19 kΩ 
C)  2 kΩ 
D)  1.5 kΩ 
A)  6.3 kΩ 
B)  19 kΩ 
C)  2 kΩ 
D)  1.5 kΩ

Question 15

To determine the value of a resistor to place in shunt with a known resistor to obtain a certain value of the total parallel combination:

Accepted Answer

A)  multiply the desired value by the known value, then divide this product by their difference. 
B)  subtract the known from the desired total. 
C)  multiply the desired by the known, then divide this product by their sum. 
D)  add the desired to the known. 
A)  multiply the desired value by the known value, then divide this product by their difference. 
B)  subtract the known from the desired total. 
C)  multiply the desired by the known, then divide this product by their sum. 
D)  add the desired to the known.

Question 16

The total equivalent) resistance in a parallel circuit is always less than the lowest value resistor in the circuit.

Accepted Answer

A) True 
 B)False

Question 17

A junction is any point in a circuit where two or more circuit paths come together.

Accepted Answer

A) True 
 B)False

Question 18

Shunt resistors:

Accepted Answer

A)  are connected in parallel for higher current range settings on a meter. 
B)  are not used in ammeters. 
C)  are connected in series for higher current range settings on a meter. 
D)  are resistors connected in series. 
A)  are connected in parallel for higher current range settings on a meter. 
B)  are not used in ammeters. 
C)  are connected in series for higher current range settings on a meter. 
D)  are resistors connected in series.

Question 19

Figure 6-4
-Given the circuit in Figure 6-4, what is the voltage drop across R2?

Accepted Answer

A)  0.25 A 
B)  10 V 
C)  3.3 V 
D)  25.0 V 
A)  0.25 A 
B)  10 V 
C)  3.3 V 
D)  25.0 V

Question 20

Figure 6-4
-Given the circuit in Figure 6-4, find the total current It).

Accepted Answer

A)  0.187 A 
B)  24.8 mA 
C)  0.024 A 
D)  375 mA 
A)  0.187 A 
B)  24.8 mA 
C)  0.024 A 
D)  375 mA

Exam 6: Parallel Circuits

-Given the circuit in Figure , if R3 is changed to 100 Ω, the total circuit current will:

Figure 6-7 -Given the circuit in Figure 6-7, select a minimum wattage rating for R2.

The voltage drop across each resistance in a parallel circuit is equal to the applied voltage.

A parallel connection provides two or more paths for current to flow.

-Given the circuit in Figure , what is the total equivalent) resistance?

The voltage across any branch of a parallel circuit:

Figure 6-6 -Given the circuit in Figure 6-6, find the total current.

The general current divider equation used to find a branch current is equal to the:

The total power taken from the power supply, and dissipated by the resistors in a parallel circuit, is the sum of the powers dissipated by each resistor in the circuit.

-Given the circuit in Figure 6-9, what is the output current Iout)?

Kirchhoff's law for parallel circuits states that the:

-Given the circuit in Figure 6-9, what voltage must be applied between points A and B to get the circuit current of 2.75 mA?

-Given the circuit in Figure 6-5, what is the current flowing through R2?

What is the total resistance of a 3 kΩ, 4 kΩ, and 12 kΩ resistors that are in parallel with each other?

To determine the value of a resistor to place in shunt with a known resistor to obtain a certain value of the total parallel combination:

The total equivalent) resistance in a parallel circuit is always less than the lowest value resistor in the circuit.

A junction is any point in a circuit where two or more circuit paths come together.

Shunt resistors:

Figure 6-4 -Given the circuit in Figure 6-4, what is the voltage drop across R2?

Figure 6-4 -Given the circuit in Figure 6-4, find the total current It).

Quantities and Units

Voltage, Current, and Resistance

Ohms Law

Energy and Power

Series Circuits

Series-Parallel Circuits

Circuit Theorems and Conversions

Branch, Loop, and Node Analyses

Magnetism and Electromagnetism

Introduction to Alternating Current and Voltage

Capacitors

Inductors

Transformers

Rc Circuits

Rl Circuits

Rlc Circuits and Resonance

Passive Filters

Circuit Theorems in Ac Analysis

Time Response of Reactive Circuits

Three-Phase Systems in Power Applications

Filters