Question 1

The total resistance of a three-branch parallel circuit is   what is the value of   ?

Accepted Answer

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

Question 2

As resistors are disconnected from a parallel circuit, ________.

Accepted Answer

A)    increases and   decreases 
B)    decreases and   decreases 
C)    increases and   increases 
D)    ecreases and   increases 
A)    increases and   decreases 
B)    decreases and   decreases 
C)    increases and   increases 
D)    ecreases and   increases

Question 3

To measure the current through one branch of a parallel circuit, the meter is connected ________.

Accepted Answer

A) in series with the source 
B) in parallel with the branch resistor 
C) in series with the branch resistor 
D) across the source 
A) in series with the source 
B) in parallel with the branch resistor 
C) in series with the branch resistor 
D) across the source

Question 4

If you want to measure a load voltage with a DVM, connect the meter ________.

Accepted Answer

A) across the source 
B) in parallel with the load 
C) in series with the load 
D) in series with the source 
A) across the source 
B) in parallel with the load 
C) in series with the load 
D) in series with the source

Question 5

If the power dissipation in each of four parallel branches is 1 W,   equals ________.

Accepted Answer

A) 1 W 
B) 4 W 
C) 0 W 
D) 0.25 W 
A) 1 W 
B) 4 W 
C) 0 W 
D) 0.25 W

Question 6

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

Accepted Answer

A) decreases 
B) increases 
C) varies wildly 
D) remains unchanged 
A) decreases 
B) increases 
C) varies wildly 
D) remains unchanged

Question 7

In a parallel circuit, the largest amount of power is dissipated by:

Accepted Answer

A) the first resistor. 
B) the largest resistor. 
C) the smallest resistor. 
D) any resistor, since the voltage is the same across each of the branch circuits. 
A) the first resistor. 
B) the largest resistor. 
C) the smallest resistor. 
D) any resistor, since the voltage is the same across each of the branch circuits.

Question 8

-Refer to Figure 5-1. To accurately measure the total current for this circuit, how must the ammeter be connected?

Accepted Answer

A) between the negative terminal and the supply and ground 
B) between R1 and the fuse 
C) between the positive terminal and the fuse 
D) either A or C 
A) between the negative terminal and the supply and ground 
B) between R1 and the fuse 
C) between the positive terminal and the fuse 
D) either A or C

Question 9

As additional branch resistors are connected in a parallel circuit, ________.

Accepted Answer

A)    decreases and   increases 
B)    increases and R   increases 
C)    decreases and   decreases 
D)    increases and   ecreases 
A)    decreases and   increases 
B)    increases and R   increases 
C)    decreases and   decreases 
D)    increases and   ecreases

Question 10

-Refer to Figure 5-1. The fuse in this circuit is rated at 100 mA. Would the fuse blow if an additional 1 kΩ were placed in parallel with R5?

Accepted Answer

A) no 
B) yes 
C) Fuse has nothing to do with this part of the circuit. 
A) no 
B) yes 
C) Fuse has nothing to do with this part of the circuit.

Question 11

If you measure a lower than normal total current in a parallel circuit, ________.

Accepted Answer

A) all of the resistors are opened 
B) a resistor opened 
C) the power supply is off 
D) a resistor shorted 
A) all of the resistors are opened 
B) a resistor opened 
C) the power supply is off 
D) a resistor shorted

Question 12

If a   resistor are connected in parallel, what is

Accepted Answer

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

Question 13

If a   resistor, a   resistor and a   resistor are connected in parallel across a 50 V source, what is the current through the   resistor?

Accepted Answer

A) 4.72 mA 
B) 15.15 mA 
C) 9.21 mA 
D) 10.64 mA 
A) 4.72 mA 
B) 15.15 mA 
C) 9.21 mA 
D) 10.64 mA

Question 14

The power dissipated by any branch of a parallel circuit ________.

Accepted Answer

A) depends on the power rating of the resistor 
B) only depends on the circuit voltage 
C) depends on the voltage and value of the resistor 
D) only depends on the total current 
A) depends on the power rating of the resistor 
B) only depends on the circuit voltage 
C) depends on the voltage and value of the resistor 
D) only depends on the total current

Question 15

If twelve   resistors are connected in parallel across 50 V, RT equals ________.

Accepted Answer

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

Question 16

If four 100 W lamps are connected in parallel across a 120 V source, what is the total current?

Accepted Answer

A) 33.3 A 
B) 833 mA 
C) 8.33 A 
D) 3.33 A 
A) 33.3 A 
B) 833 mA 
C) 8.33 A 
D) 3.33 A

Question 17

If one branch of a parallel circuit opens, the total resistance decreases.

Accepted Answer

A) True 
 B)False

Question 18

If eight   resistors are connected in parallel across a 25 V source, RT equals ________.

Accepted Answer

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

Question 19

If 5 A and 3 A enter a junction from two separate paths, how much current flows out of the junction?

Accepted Answer

A) 3 A 
B) 8 A 
C) 2 A 
D) the larger of the two 
A) 3 A 
B) 8 A 
C) 2 A 
D) the larger of the two

Question 20

If a   resistor,   resistor and   resistor are connected in parallel, what is the approximate value for   ?

Accepted Answer

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

Exam 5: Series Circuits

The total resistance of a three-branch parallel circuit is what is the value of ?

As resistors are disconnected from a parallel circuit, ________.

To measure the current through one branch of a parallel circuit, the meter is connected ________.

If you want to measure a load voltage with a DVM, connect the meter ________.

If the power dissipation in each of four parallel branches is 1 W, equals ________.

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

In a parallel circuit, the largest amount of power is dissipated by:

-Refer to Figure 5-1. To accurately measure the total current for this circuit, how must the ammeter be connected?

As additional branch resistors are connected in a parallel circuit, ________.

-Refer to Figure 5-1. The fuse in this circuit is rated at 100 mA. Would the fuse blow if an additional 1 kΩ were placed in parallel with R5?

If you measure a lower than normal total current in a parallel circuit, ________.

If a resistor are connected in parallel, what is

If a resistor, a resistor and a resistor are connected in parallel across a 50 V source, what is the current through the resistor?

The power dissipated by any branch of a parallel circuit ________.

If twelve resistors are connected in parallel across 50 V, RT equals ________.

If four 100 W lamps are connected in parallel across a 120 V source, what is the total current?

If one branch of a parallel circuit opens, the total resistance decreases.

If eight resistors are connected in parallel across a 25 V source, RT equals ________.

If 5 A and 3 A enter a junction from two separate paths, how much current flows out of the junction?

If a resistor, resistor and resistor are connected in parallel, what is the approximate value for ?

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