Question 1

A   resistor,   resistor and   resistor are connected in parallel across a 15 V source. What is the total current if the   resistor opens?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)    D

Question 2

If three   resistors are connected in parallel across a 12 V source, what is the value of   ?

Accepted Answer

A) 141 mW 
B) 14.1 mW 
C) 91.9 mW 
D) 1.41 W 
A) 141 mW 
B) 14.1 mW 
C) 91.9 mW 
D) 1.41 W C

Question 3

If a   resistor,   resistor and   resistor are connected in parallel across an 18 V source, what is the total current if the 1   resistor opens?

Accepted Answer

A)    
B) 74.3 mA 
C) 92.3 mA 
D)    
A)    
B) 74.3 mA 
C) 92.3 mA 
D)    A

Question 4

The most popular application for a parallel circuit in electronics is as a:

Accepted Answer

A) voltage divider. 
B) resistance divider. 
C) current divider. 
D) power divider. 
A) voltage divider. 
B) resistance divider. 
C) current divider. 
D) power divider.

Question 5

If there is 100 mA of current flowing into a three-branch parallel circuit and two of the branch currents are 40 mA and 20 mA, the third branch current is ________.

Accepted Answer

A) 20 mA 
B) 40 mA 
C) 60 mA 
D) 160 mA 
A) 20 mA 
B) 40 mA 
C) 60 mA 
D) 160 mA

Question 6

If a   resistor,   resistor and   resistor are connected in parallel, the total resistance equals ________.

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 7

Measurement of total current is accomplished with the ammeter in series with the source voltage.

Accepted Answer

A) True 
 B)False

Question 8

In a three-branch parallel circuit,   Calculate

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 9

An open in one branch of a parallel circuit results in:

Accepted Answer

A) decreased or reduced current flow. 
B) decreased power consumption. 
C) increased circuit resistance. 
D) all of these. 
A) decreased or reduced current flow. 
B) decreased power consumption. 
C) increased circuit resistance. 
D) all of these.

Question 10

If one resistor shorts in a parallel circuit, the total current ________.

Accepted Answer

A) increases 
B) equals 0 A 
C) decreases 
D) decreases momentarily, then returns to the original value 
A) increases 
B) equals 0 A 
C) decreases 
D) decreases momentarily, then returns to the original value

Question 11

A three-branch parallel circuit carries a total current of 1.2 mA. If   mA, then what is the value of

Accepted Answer

A) 2.4 mA 
B) 8.7 mA 
C) 7.2 mA 
D) 0.3 mA 
A) 2.4 mA 
B) 8.7 mA 
C) 7.2 mA 
D) 0.3 mA

Question 12

If the total current equals 0 A in a four-branch parallel circuit, the trouble is that ________.

Accepted Answer

A) three of the resistors have opened 
B) one of the resistors has shorted 
C) one resistor has opened 
D) the power supply is off 
A) three of the resistors have opened 
B) one of the resistors has shorted 
C) one resistor has opened 
D) the power supply is off

Question 13

A short in one branch of a parallel circuit results in:

Accepted Answer

A) increased circuit resistance. 
B) decreased power consumption. 
C) increased voltage drops in the remaining branches. 
D) increased current flow. 
A) increased circuit resistance. 
B) decreased power consumption. 
C) increased voltage drops in the remaining branches. 
D) increased current flow.

Question 14

Each branch in a four-branch parallel circuit carries 10 mA. If one of the branches opens, then the current in each of the other three branches equals ________.

Accepted Answer

A) 0 A 
B) 30 mA 
C) 13.33 mA 
D) 10 mA 
A) 0 A 
B) 30 mA 
C) 13.33 mA 
D) 10 mA

Question 15

Kirchhoffʹs Current Law states that the sum of the currents into a junction must equal the sum of
the currents out of that junction.

Accepted Answer

A) True 
 B)False

Question 16

The total resistance of three parallel resistors equals the sum of the individual resistor values.

Accepted Answer

A) True 
 B)False

Question 17

A parallel circuit can be easily identified because only one end of each component is connected to 
each other.

Accepted Answer

A) True 
 B)False

Question 18

A formula that applies to a two-branch parallel circuit is ________.

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 19

If a   resistor and   resistor are connected in parallel, the total resistance is ________.

Accepted Answer

A)    
B) 2200 Ω 
C)    
D) less than 2200 Ω 
A)    
B) 2200 Ω 
C)    
D) less than 2200 Ω

Question 20

A two-branch parallel circuit contains these values:   . What is the value of V

Accepted Answer

A) 2.4 m V 
B) 3.6 m V 
C) 6 m V 
D) 18 m V 
A) 2.4 m V 
B) 3.6 m V 
C) 6 m V 
D) 18 m V

Exam 5: Series Circuits

A resistor, resistor and resistor are connected in parallel across a 15 V source. What is the total current if the resistor opens?

If three resistors are connected in parallel across a 12 V source, what is the value of ?

If a resistor, resistor and resistor are connected in parallel across an 18 V source, what is the total current if the 1 resistor opens?

The most popular application for a parallel circuit in electronics is as a:

If there is 100 mA of current flowing into a three-branch parallel circuit and two of the branch currents are 40 mA and 20 mA, the third branch current is ________.

If a resistor, resistor and resistor are connected in parallel, the total resistance equals ________.

Measurement of total current is accomplished with the ammeter in series with the source voltage.

In a three-branch parallel circuit, Calculate

An open in one branch of a parallel circuit results in:

If one resistor shorts in a parallel circuit, the total current ________.

A three-branch parallel circuit carries a total current of 1.2 mA. If mA, then what is the value of

If the total current equals 0 A in a four-branch parallel circuit, the trouble is that ________.

A short in one branch of a parallel circuit results in:

Each branch in a four-branch parallel circuit carries 10 mA. If one of the branches opens, then the current in each of the other three branches equals ________.

Kirchhoffʹs Current Law states that the sum of the currents into a junction must equal the sum of the currents out of that junction.

The total resistance of three parallel resistors equals the sum of the individual resistor values.

A parallel circuit can be easily identified because only one end of each component is connected to each other.

A formula that applies to a two-branch parallel circuit is ________.

If a resistor and resistor are connected in parallel, the total resistance is ________.

A two-branch parallel circuit contains these values: . What is the value of V

Quantities and Units

Voltage, Current, and Resistance

Ohms Law

Energy and Power

Parallel 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