Test Bank For Introduction to Electronics
Chapter 1
CHAPTER 1: FUNDAMENTALS OF ELECTRICITY
MULTIPLE CHOICE
1. The chemical combination of two or more elements is called a(n) ____.
a. mixture c. molecule
b. compound d. atom
ANS: B PTS: 1 REF: 4
2. A(n) ____ is a substance that cannot be reduced to a simpler substance by chemical means.
a. element c. molecule
b. compound d. atom
ANS: A PTS: 1 REF: 4
3. An example of a compound is ____.
a. carbon dioxide c. salt
b. tungsten d. salt water
ANS: C PTS: 1 REF: 4-5
4. The number of protons in the nucleus of the atom is called the element’s ____.
a. atomic number c. atomic mass
b. atomic weight d. relative atomic mass
ANS: A PTS: 1 REF: 5
5. An atom having seven electrons in the valence shell is ____ conductive than an atom having three
electrons in the valence shell.
a. equally as c. more
b. less d. not enough information is given
ANS: B PTS: 1 REF: 7
6. The symbol ____ is used in electronics to represent voltage.
a. V c.
b. C d. E
ANS: D PTS: 1 REF: 8
7. Current is measured in ____.
a. coulombs c. amperes
b. ohms d. volts
ANS: C PTS: 1 REF: 7
8. The source that creates an excess of electrons (negative charge) at one end of a conductor and a
deficiency of electrons (positive charge) at the opposite end represents the ____.
1
, Test Bank For Introduction to Electronics
Chapter 1
a. potential c. electromotive force
b. difference of potential d. voltage
ANS: A PTS: 1 REF: 8
9. The actual work accomplished in a circuit is a result of the ____ available at the two ends of a
conductor.
a. potential c. electromotive force
b. difference of potential d. voltage
ANS: B PTS: 1 REF: 8
10. Materials that have many free electrons and offer little resistance to current flow are called ____.
a. conductors c. semiconductors
b. insulators d. circuits
ANS: A PTS: 1 REF: 8
COMPLETION
1. A perfect insulator will have atoms with ____________________ valence shells.
ANS: full
PTS: 1 REF: 7
2. ____________________ is the process of gaining or losing electrons.
ANS: Ionization
PTS: 1 REF: 7
3. __________ is the force that moves the electrons in the circuit.
ANS: Voltage
PTS: 1 REF: 8
SHORT ANSWER
1. Describe why the conductivity of an atom depends on its valence band.
ANS:
2
, Test Bank For Introduction to Electronics
Chapter 1
The farther the valence shell is from the nucleus, the less attraction the nucleus has on each valence
electron. Thus the potential for the atom to gain or lose electrons increases if the valence shell is not
full and is located far enough away from the nucleus. Conductivity of an atom depends on its valence
band. The greater the number of electrons in the valence shell, the less it conducts. For example, an
atom having seven electrons in the valence shell is less conductive than an atom having three electrons
in the valence shell.
PTS: 1 REF: 5-6
2. What is the difference between conductors and insulators?
ANS:
Materials with a low resistance are called conductors. Conductors have many free electrons and offer
little resistance to current flow. As previously mentioned, silver, copper, gold, and aluminum are
examples of good conductors.
Materials with a high resistance are called insulators. Insulators have few free electrons and offer a
high resistance to current flow. As previously mentioned, glass, rubber, and plastic are examples of
good insulators.
PTS: 1 REF: 8
3
, Test Bank For Introduction to Electronics
Chapter 2
CHAPTER 2: CURRENT
MULTIPLE CHOICE
1. A(n) ____ represents the amount of current in a conductor when one coulomb of charge moves past a
point in one second.
a. volt c. electron
b. ohm d. ampere
ANS: D PTS: 1 REF: 12-13
2. The electrical charge (Q) carried by 6.24 x 1018 electrons represents one ____.
a. volt c. coulomb
b. ohm d. ampere
ANS: C PTS: 1 REF: 12
3. Electrical charge (Q) is measured in ____.
a. volts c. coulombs
b. ohms d. amperes
ANS: C PTS: 1 REF: 12
4. The unit of measurement for current flow is the ____.
a. volt c. coulomb
b. ohm d. ampere
ANS: D PTS: 1 REF: 12
5. When a(n) ____ exists between two charged bodies connected by a conductor, electrons will flow
along the conductor.
a. voltage source c. deficiency of electrons
b. difference of potential d. excess of electrons
ANS: B PTS: 1 REF: 12
6. The relationship between current, electrical charge, and time is represented by the formula ____.
a. Q=I/t c. I=Q/t
b. t=Q/I d. I=t/Q
ANS: C PTS: 1 REF: 13
7. ____ represent the charge carrier in an electrical circuit.
a. Volts c. Electrons
b. Ohms d. Amperes
ANS: C PTS: 1 REF: 13
4
Chapter 1
CHAPTER 1: FUNDAMENTALS OF ELECTRICITY
MULTIPLE CHOICE
1. The chemical combination of two or more elements is called a(n) ____.
a. mixture c. molecule
b. compound d. atom
ANS: B PTS: 1 REF: 4
2. A(n) ____ is a substance that cannot be reduced to a simpler substance by chemical means.
a. element c. molecule
b. compound d. atom
ANS: A PTS: 1 REF: 4
3. An example of a compound is ____.
a. carbon dioxide c. salt
b. tungsten d. salt water
ANS: C PTS: 1 REF: 4-5
4. The number of protons in the nucleus of the atom is called the element’s ____.
a. atomic number c. atomic mass
b. atomic weight d. relative atomic mass
ANS: A PTS: 1 REF: 5
5. An atom having seven electrons in the valence shell is ____ conductive than an atom having three
electrons in the valence shell.
a. equally as c. more
b. less d. not enough information is given
ANS: B PTS: 1 REF: 7
6. The symbol ____ is used in electronics to represent voltage.
a. V c.
b. C d. E
ANS: D PTS: 1 REF: 8
7. Current is measured in ____.
a. coulombs c. amperes
b. ohms d. volts
ANS: C PTS: 1 REF: 7
8. The source that creates an excess of electrons (negative charge) at one end of a conductor and a
deficiency of electrons (positive charge) at the opposite end represents the ____.
1
, Test Bank For Introduction to Electronics
Chapter 1
a. potential c. electromotive force
b. difference of potential d. voltage
ANS: A PTS: 1 REF: 8
9. The actual work accomplished in a circuit is a result of the ____ available at the two ends of a
conductor.
a. potential c. electromotive force
b. difference of potential d. voltage
ANS: B PTS: 1 REF: 8
10. Materials that have many free electrons and offer little resistance to current flow are called ____.
a. conductors c. semiconductors
b. insulators d. circuits
ANS: A PTS: 1 REF: 8
COMPLETION
1. A perfect insulator will have atoms with ____________________ valence shells.
ANS: full
PTS: 1 REF: 7
2. ____________________ is the process of gaining or losing electrons.
ANS: Ionization
PTS: 1 REF: 7
3. __________ is the force that moves the electrons in the circuit.
ANS: Voltage
PTS: 1 REF: 8
SHORT ANSWER
1. Describe why the conductivity of an atom depends on its valence band.
ANS:
2
, Test Bank For Introduction to Electronics
Chapter 1
The farther the valence shell is from the nucleus, the less attraction the nucleus has on each valence
electron. Thus the potential for the atom to gain or lose electrons increases if the valence shell is not
full and is located far enough away from the nucleus. Conductivity of an atom depends on its valence
band. The greater the number of electrons in the valence shell, the less it conducts. For example, an
atom having seven electrons in the valence shell is less conductive than an atom having three electrons
in the valence shell.
PTS: 1 REF: 5-6
2. What is the difference between conductors and insulators?
ANS:
Materials with a low resistance are called conductors. Conductors have many free electrons and offer
little resistance to current flow. As previously mentioned, silver, copper, gold, and aluminum are
examples of good conductors.
Materials with a high resistance are called insulators. Insulators have few free electrons and offer a
high resistance to current flow. As previously mentioned, glass, rubber, and plastic are examples of
good insulators.
PTS: 1 REF: 8
3
, Test Bank For Introduction to Electronics
Chapter 2
CHAPTER 2: CURRENT
MULTIPLE CHOICE
1. A(n) ____ represents the amount of current in a conductor when one coulomb of charge moves past a
point in one second.
a. volt c. electron
b. ohm d. ampere
ANS: D PTS: 1 REF: 12-13
2. The electrical charge (Q) carried by 6.24 x 1018 electrons represents one ____.
a. volt c. coulomb
b. ohm d. ampere
ANS: C PTS: 1 REF: 12
3. Electrical charge (Q) is measured in ____.
a. volts c. coulombs
b. ohms d. amperes
ANS: C PTS: 1 REF: 12
4. The unit of measurement for current flow is the ____.
a. volt c. coulomb
b. ohm d. ampere
ANS: D PTS: 1 REF: 12
5. When a(n) ____ exists between two charged bodies connected by a conductor, electrons will flow
along the conductor.
a. voltage source c. deficiency of electrons
b. difference of potential d. excess of electrons
ANS: B PTS: 1 REF: 12
6. The relationship between current, electrical charge, and time is represented by the formula ____.
a. Q=I/t c. I=Q/t
b. t=Q/I d. I=t/Q
ANS: C PTS: 1 REF: 13
7. ____ represent the charge carrier in an electrical circuit.
a. Volts c. Electrons
b. Ohms d. Amperes
ANS: C PTS: 1 REF: 13
4
