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Basic Electrical Theory: Chapter 1 Final
Exam Questions With Correct Answers
Because of their light weight, ______ actively participate in the transfer of energy. -
answer✔electrons
_____ charge is due to an excess of, or deficiency of, electrons between objects that have been
separated. - answer✔Electrostatic
What often helps reduce electrostatic charge? - answer✔providing a path to the earth
The discharge of electrons from a negatively charged object is sometimes seen as an arc, and the
arc distance is a function of the ______ and the _______between the bodies. - answer✔static
voltage and dielectric
Lightening frequently terminates to an elevated point and it strikes nonmetallic as well as
metallic objects with the same frequency. T/F - answer✔True
The termination of the lightening stroke is likely/unlikely to ignite combustible materials. -
answer✔likely
Does lightening protection protect the building itself as well as the electrical equipment on or
inside the structure? - answer✔No
What are the best conductors, in order of their conductivity? - answer✔SCGA: Silver, Copper,
Gold, Aluminum
Conductive materials have one, two, or three valence electrons. T/F - answer✔True
Elements with one valence electron, such as silver, copper, and gold make the best electrical
conductors. T/F - answer✔True
Compounds can change the electrical characteristics of an individual atom. For example, the
insulating aluminum -oxide compound is very difficult to break and its presence often results in
the overheating of aluminum conductors at their terminals. T/F - answer✔True
The end of the compass needle that points _____ is actually the _______ pole of the compass
needle seeking the earth's magnetic north pole. - answer✔north, south
Ferrous materials are _______ based. - answer✔iron
, ©THEBRIGHTSTARS 2024
Only ferrous materials have ______ properties. - answer✔magnetic
Soft iron is used for temporary magnets. T/F - answer✔True
If a permanent magnet is struck with a hammer, it will lose some of its magnetism. T/F -
answer✔True
Each subsequent blow to the permanent magnet helps the molecules return to their original
positions. T/F - answer✔True
Magnetic lines of force can/cannot cross each other. - answer✔cannot
The Law of Attraction and Repulsion of magnets states "_____ poles attract and ______ poles
oppose each other. - answer✔like, unlike
Can magnetic lines of force cross each other? - answer✔No
The Law of Attraction and Repulsion of magnets states that _____ poles attract and ______
poles oppose each other. - answer✔unlike, like
Which can be used to make a stronger magnet - soft iron or hard steel? - answer✔soft iron
The instant that the magnetizing force is removed, the ______ loses all of its magnetism. -
answer✔soft iron
The movement of electrons to perform a useful function is called _________. -
answer✔electricity
It is not the force of the magnetic field through a conductor that produces electricity; it is the
relative motion of the field to the electrons within the conductor that produces the movement of
electrons. T/F - answer✔True
Electroplating is the process where metal from one surface is removed to another surface because
of a chemical action caused by ___________. - answer✔electrical current
People become injured and death occurs when voltage pushes ________ through the human
body, causing the heart to go into _____________________. - answer✔electrons, ventricular
fibrillation
The severity of an electric shock is dependent on the ________ flowing through the body, which
i s impacted by circuit voltage and ________________. - answer✔current, contact resistance.
An electric arc blast can a approach _________, which vaporizes metal parts and produces an
explosive and deadly pressure wave. - answer✔30,000 degrees F
Basic Electrical Theory: Chapter 1 Final
Exam Questions With Correct Answers
Because of their light weight, ______ actively participate in the transfer of energy. -
answer✔electrons
_____ charge is due to an excess of, or deficiency of, electrons between objects that have been
separated. - answer✔Electrostatic
What often helps reduce electrostatic charge? - answer✔providing a path to the earth
The discharge of electrons from a negatively charged object is sometimes seen as an arc, and the
arc distance is a function of the ______ and the _______between the bodies. - answer✔static
voltage and dielectric
Lightening frequently terminates to an elevated point and it strikes nonmetallic as well as
metallic objects with the same frequency. T/F - answer✔True
The termination of the lightening stroke is likely/unlikely to ignite combustible materials. -
answer✔likely
Does lightening protection protect the building itself as well as the electrical equipment on or
inside the structure? - answer✔No
What are the best conductors, in order of their conductivity? - answer✔SCGA: Silver, Copper,
Gold, Aluminum
Conductive materials have one, two, or three valence electrons. T/F - answer✔True
Elements with one valence electron, such as silver, copper, and gold make the best electrical
conductors. T/F - answer✔True
Compounds can change the electrical characteristics of an individual atom. For example, the
insulating aluminum -oxide compound is very difficult to break and its presence often results in
the overheating of aluminum conductors at their terminals. T/F - answer✔True
The end of the compass needle that points _____ is actually the _______ pole of the compass
needle seeking the earth's magnetic north pole. - answer✔north, south
Ferrous materials are _______ based. - answer✔iron
, ©THEBRIGHTSTARS 2024
Only ferrous materials have ______ properties. - answer✔magnetic
Soft iron is used for temporary magnets. T/F - answer✔True
If a permanent magnet is struck with a hammer, it will lose some of its magnetism. T/F -
answer✔True
Each subsequent blow to the permanent magnet helps the molecules return to their original
positions. T/F - answer✔True
Magnetic lines of force can/cannot cross each other. - answer✔cannot
The Law of Attraction and Repulsion of magnets states "_____ poles attract and ______ poles
oppose each other. - answer✔like, unlike
Can magnetic lines of force cross each other? - answer✔No
The Law of Attraction and Repulsion of magnets states that _____ poles attract and ______
poles oppose each other. - answer✔unlike, like
Which can be used to make a stronger magnet - soft iron or hard steel? - answer✔soft iron
The instant that the magnetizing force is removed, the ______ loses all of its magnetism. -
answer✔soft iron
The movement of electrons to perform a useful function is called _________. -
answer✔electricity
It is not the force of the magnetic field through a conductor that produces electricity; it is the
relative motion of the field to the electrons within the conductor that produces the movement of
electrons. T/F - answer✔True
Electroplating is the process where metal from one surface is removed to another surface because
of a chemical action caused by ___________. - answer✔electrical current
People become injured and death occurs when voltage pushes ________ through the human
body, causing the heart to go into _____________________. - answer✔electrons, ventricular
fibrillation
The severity of an electric shock is dependent on the ________ flowing through the body, which
i s impacted by circuit voltage and ________________. - answer✔current, contact resistance.
An electric arc blast can a approach _________, which vaporizes metal parts and produces an
explosive and deadly pressure wave. - answer✔30,000 degrees F
