Question 1

The smaller the diameter of a wire

Accepted Answer

A)   the less current it can carry
B)   the more current it can carry
C)   the IR drop will be lower
D)   the cross-sectional area will be largerE) B) and D)
F) C) and D)

Question 2

Switches cannot have more than two poles and two throws.

Accepted Answer

A) True 
 B)False

Question 3

)  Substances that have very high resistance, on the order of many megohms, are classed as

Accepted Answer

A)   electrolytes
B)   ions
C)   conductors
D)   insulatorsE) A) and C)
F) B) and C)

Question 4

Resistance of a wire is

Accepted Answer

A)   inversely proportional to its length
B)   directly proportional to its length
C)   directly proportional to its cross-sectional area
D)   not affected by the resistivity of the conductorE) A) and C)
F) B) and C)

Question 5

The resistance of a wire conductor is ______________ proportional to its cross-sectional area.

Accepted Answer

The answer of The resistance of a wire conductor is...

Question 6

An ______________ is an atom, or group of atoms, that has a net electric charge, either positive or negative, resulting from a loss or gain of electrons.

Accepted Answer

The answer of An ______________ is an atom, or group...

Question 7

What is the rating that lists the resistance of a metal having the standard wire size of a 1-ft length with a cross-sectional area of 1 cmil?

Accepted Answer

A)   Power
B)   Specific gravity
C)   Specific resistance
D)   ToleranceE) A) and D)
F) A) and B)

Question 8

What effect occurs when certain metals or ceramic materials are cooled down to very low temperatures to reduce its resistance?

Accepted Answer

A)   Zero resistance
B)   Negative temperature coefficient
C)   Superconductivity
D)   Positive temperature coefficientE) B) and C)
F) A) and B)

Question 9

Liquids that are good conductors because of ionization are called

Accepted Answer

A)   hydration
B)   ionites
C)   electrolytes
D)   bionic solutionsE) All of the above
F) A) and D)

Question 10

Continuity of wires and printed wiring can be tested by using a(n)

Accepted Answer

A)   oscilloscope
B)   voltmeter
C)   ammeter
D)   ohmmeterE) A) and B)
F) All of the above

Question 11

The smaller the diameter of a wire, the more current it can carry.

Accepted Answer

A) True 
 B)False

Question 12

The resistance of a wire conductor is directly proportional to its length and inversely proportional to its cross-sectional area.

Accepted Answer

A) True 
 B)False

Question 13

What size soldering iron should be used when soldering or desoldering?

Accepted Answer

A)   5 W
B)   25 W
C)   75 W
D)   100 WE) All of the above
F) B) and D)

Question 14

______________ fuses have coiled construction and are designed to open only on a continued overload.

Accepted Answer

The answer of ______________ fuses have coiled construction and are...

Question 15

Most wire conductors are silver.

Accepted Answer

A) True 
 B)False

Question 16

The RCA-type plug is universally used in cable television.

Accepted Answer

A) True 
 B)False

Question 17

A device constructed of a thin bimetallic strip that expands with heat and in turn opens the circuit is called a

Accepted Answer

A)   fuse
B)   switch
C)   circuit breaker
D)   thermistorE) A) and B)
F) A) and C)

Question 18

To reduce the ______________ effect, conductors that have high voltage should be smooth, rounded, and thick.

Accepted Answer

The answer of To reduce the ______________ effect, conductors that...

Question 19

An atom, or group of atoms that has a net electric charge, either positive or negative, resulting from a loss or gain of electrons is a(n)

Accepted Answer

A)   proton
B)   joule
C)   ion
D)   ampereE) A) and B)
F) None of the above

Question 20

______________ of conductors, both wires and printed wiring, can be checked with an ohmmeter.

Accepted Answer

The answer of ______________ of conductors, both wires and printed...

Exam 12: Conductors and Insulators

The resistance of a wire conductor is ______________ proportional to its cross-sectional area.

Correct AnswerverifiedShow Answer

) Substances that have very high resistance, on the order of many megohms, are classed as

Correct AnswerverifiedShow Answer

What effect occurs when certain metals or ceramic materials are cooled down to very low temperatures to reduce its resistance?

Correct AnswerverifiedShow Answer

The smaller the diameter of a wire, the more current it can carry.

Correct AnswerverifiedShow Answer

What size soldering iron should be used when soldering or desoldering?

Correct AnswerverifiedShow Answer

An ______________ is an atom, or group of atoms, that has a net electric charge, either positive or negative, resulting from a loss or gain of electrons.

Correct AnswerverifiedShow Answer

Switches cannot have more than two poles and two throws.

Correct AnswerverifiedShow Answer

To reduce the ______________ effect, conductors that have high voltage should be smooth, rounded, and thick.

Correct AnswerverifiedShow Answer

______________ fuses have coiled construction and are designed to open only on a continued overload.

Correct AnswerverifiedShow Answer

Most wire conductors are silver.

Correct AnswerverifiedShow Answer

Resistance of a wire is

Correct AnswerverifiedShow Answer

The RCA-type plug is universally used in cable television.

Correct AnswerverifiedShow Answer

An atom, or group of atoms that has a net electric charge, either positive or negative, resulting from a loss or gain of electrons is a(n)

Correct AnswerverifiedShow Answer

The resistance of a wire conductor is directly proportional to its length and inversely proportional to its cross-sectional area.

Correct AnswerverifiedShow Answer

The smaller the diameter of a wire

Correct AnswerverifiedShow Answer

What is the rating that lists the resistance of a metal having the standard wire size of a 1-ft length with a cross-sectional area of 1 cmil?

Correct AnswerverifiedShow Answer

______________ of conductors, both wires and printed wiring, can be checked with an ohmmeter.

Correct AnswerverifiedShow Answer

Continuity of wires and printed wiring can be tested by using a(n)

Correct AnswerverifiedShow Answer

Liquids that are good conductors because of ionization are called

Correct AnswerverifiedShow Answer

A device constructed of a thin bimetallic strip that expands with heat and in turn opens the circuit is called a

Correct AnswerverifiedShow Answer

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