Question 1

The term "load" refers to the amount of _____ in a circuit branch.

Accepted Answer

A)  current 
B)  resistance 
C)  voltage 
D)  wattage 
A)  current 
B)  resistance 
C)  voltage 
D)  wattage A

Question 2

A two-branch parallel circuit has a 30 Ω and a 15 Ω resistor. What is the total resistance?

Accepted Answer

A)  2 Ω 
B)  10 Ω 
C)  45 Ω 
D)  15 Ω 
A)  2 Ω 
B)  10 Ω 
C)  45 Ω 
D)  15 Ω B

Question 3

In a parallel circuit, the voltage across each branch must be _______________.

Accepted Answer

equal

Question 4

The amount of current flowing through each resistor is directly proportional to its resistance.

Accepted Answer

A) True 
 B)False

Question 5

A method for finding total resistance of parallel resistors is _____.

Accepted Answer

A)  product over sum 
B)  reciprocal formula 
C)  resistors of equal value 
D)  all of the above 
A)  product over sum 
B)  reciprocal formula 
C)  resistors of equal value 
D)  all of the above

Question 6

In a parallel circuit, the total resistance is _____ value resistor.

Accepted Answer

A)  larger than the lowest 
B)  less than the lowest 
C)  equal to the largest 
D)  equal to the lowest 
A)  larger than the lowest 
B)  less than the lowest 
C)  equal to the largest 
D)  equal to the lowest

Question 7

A three-branch parallel circuit has a total resistance of 385.83 Ω . Two of the resistors are 680 Ω and 1500 Ω . What is the value of the third resistor?

Accepted Answer

A)  2180 Ω 
B)  2200 Ω 
C)  467.89 Ω 
D)  246.16 Ω 
A)  2180 Ω 
B)  2200 Ω 
C)  467.89 Ω 
D)  246.16 Ω

Question 8

The voltage drop across any branch of a parallel circuit is the same as _______________ voltage.

Accepted Answer

The answer of The voltage drop across any branch of...

Question 9

A parallel circuit is composed of two 60 Ω resistors. What is the total resistance?

Accepted Answer

A)  1 Ω 
B)  3600 Ω 
C)  120 Ω 
D)  30 Ω 
A)  1 Ω 
B)  3600 Ω 
C)  120 Ω 
D)  30 Ω

Question 10

A parallel circuit composed of a 150 Ω and a 270 Ω resistor has a voltage of 120 V. What is the current in the 150 Ω resistor?

Accepted Answer

A)  0.29 A 
B)  0.8 A 
C)  1 A 
D)  0.44 A 
A)  0.29 A 
B)  0.8 A 
C)  1 A 
D)  0.44 A

Question 11

A parallel circuit composed of a 10 Ω and a 22 Ω resistor. It has a voltage of 60 V. What is the current in the 10 Ω resistor?

Accepted Answer

A)  6 A 
B)  5 A 
C)  2.73 A 
D)  1.88 A 
A)  6 A 
B)  5 A 
C)  2.73 A 
D)  1.88 A

Question 12

An increase in _____, not resistance, results in an increase of load.

Accepted Answer

A)  power 
B)  current 
C)  voltage 
D)  wattage 
A)  power 
B)  current 
C)  voltage 
D)  wattage

Question 13

A three branch parallel circuit has resistors of 27 Ω , 56 Ω , and 15 Ω . What is the total resistance?

Accepted Answer

A)  9.64 Ω 
B)  98 Ω 
C)  18.22 Ω 
D)  8.23 Ω 
A)  9.64 Ω 
B)  98 Ω 
C)  18.22 Ω 
D)  8.23 Ω

Question 14

Circuits that have more than one path for current flow are _____ circuits.

Accepted Answer

A)  parallel 
B)  series 
C)  combination 
A)  parallel 
B)  series 
C)  combination

Question 15

To calculate current flow through any branch of a circuit by substituting the values of IX and RX for the branch values when total circuit current and the resistance are known, use t he _______________ formula.

Accepted Answer

Question 16

Imagine a water system with a holding tank, pump, and return lines. What would happen to the resistance to flow if a return path is added to the system?

Accepted Answer

A)  It increases 
B)  It lessens 
C)  It stays the same 
A)  It increases 
B)  It lessens 
C)  It stays the same

Question 17

Parallel circuits are also referred to as _____.

Accepted Answer

A)  current dividers 
B)  current multipliers 
C)  voltage dividers 
D)  voltage multipliers 
A)  current dividers 
B)  current multipliers 
C)  voltage dividers 
D)  voltage multipliers

Question 18

Most devices such as light receptacles in homes and office buildings are connected in _______________ circuits.

Accepted Answer

The answer of Most devices such as light receptacles in...

Question 19

In a parallel circuit, the total current flow is equal to the _____ of the currents through all the branches.

Accepted Answer

A)  difference 
B)  average 
C)  sum 
D)  quotient 
A)  difference 
B)  average 
C)  sum 
D)  quotient

Exam 7: Parallel Circuits

The term "load" refers to the amount of _____ in a circuit branch.

A two-branch parallel circuit has a 30 Ω and a 15 Ω resistor. What is the total resistance?

In a parallel circuit, the voltage across each branch must be _______________.

The amount of current flowing through each resistor is directly proportional to its resistance.

A method for finding total resistance of parallel resistors is _____.

In a parallel circuit, the total resistance is _____ value resistor.

A three-branch parallel circuit has a total resistance of 385.83 Ω . Two of the resistors are 680 Ω and 1500 Ω . What is the value of the third resistor?

The voltage drop across any branch of a parallel circuit is the same as _______________ voltage.

A parallel circuit is composed of two 60 Ω resistors. What is the total resistance?

A parallel circuit composed of a 150 Ω and a 270 Ω resistor has a voltage of 120 V. What is the current in the 150 Ω resistor?

A parallel circuit composed of a 10 Ω and a 22 Ω resistor. It has a voltage of 60 V. What is the current in the 10 Ω resistor?

An increase in _____, not resistance, results in an increase of load.

A three branch parallel circuit has resistors of 27 Ω , 56 Ω , and 15 Ω . What is the total resistance?

Circuits that have more than one path for current flow are _____ circuits.

To calculate current flow through any branch of a circuit by substituting the values of IX and RX for the branch values when total circuit current and the resistance are known, use t he _______________ formula.

Imagine a water system with a holding tank, pump, and return lines. What would happen to the resistance to flow if a return path is added to the system?

Parallel circuits are also referred to as _____.

Most devices such as light receptacles in homes and office buildings are connected in _______________ circuits.

In a parallel circuit, the total current flow is equal to the _____ of the currents through all the branches.

Atomic Structure

Electrical Quantities and Ohms Law

Static Electricity

Magnetism

Resistors

Series Circuits

Combination Circuits

Kirchhoffs Law, Thevenins and Nortons Theorems

Measuring Instruments

Using Wire Tables and Determining Conductor Sizes

Conduction in Liquids and Gases

Batteries and Other Sources of Electricity

Magnetic Induction

Basic Trigonometry and Vectors

Alternating Current

Inductance in Alternating Current Circuits

Resistive-Inductive Series Circuits

Resistive-Inductive Parallel Circuits

Capacitors

Capacitance in Alternating Current Circuits

Resistive-Capacitive Series Circuits

Resistive-Capacitive Parallel Circuits

Resistive-Inductive-Capacitive Series Circuits

Resistive-Inductive-Capacitive Parallel Circuits

Filters

Three-Phase Circuits

Single-Phase Transformers

Three-Phase Transformers

Direct Current Generators

Direct Current Motors

Three-Phase Alternators

Three-Phase Motors

Single-Phase Motors

Harmonics

Filters

To calculate current flow through any branch of a circuit by substituting the values of I_X and R_X for the branch values when total circuit current and the resistance are known, use t he _______________ formula.