Conductors

Question 1

materials having many free electrons, able to carry an electric current

Answer 1

conductor

Question 2

a material having few free electrons

Answer 2

insulator

Question 3

an insulating material

Answer 3

dielectric

Question 4

a measure of wire diameter

Answer 4

gang number

Question 5

potential difference a layer of insulation can withstand without breaking down

Answer 5

dielectric strength

Question 6

an enclosed channel designed for holding conductors

Answer 6

ampacity

Question 7

nonconducting materials are called _____ as well as insulators

Answer 7

dielectrics

Question 8

metals are good conductors, because they have many ______

Answer 8

free electrons

Question 9

are all wires conductors?

Answer 9

yes

Question 10

are all conductors wires?

Answer 10

no

Question 11

wires and cables can be classified according to the kind of ________ they have.

Answer 11

covering

Question 12

a _______ consists of two or more conductors inside a single covering

Answer 12

cable

Question 13

two fundamental properties of insulation materials are called _________ and ________ .

Answer 13

insulation resistance

dielectric strength

Question 14

which of the following materials is NOT good conductor?

aluminum, copper, porcelain, or silver

Answer 14

porcelain

Question 15

which of following materials is NOT a good insulator?

clay copper rubber porcelain

Answer 15

copper

Question 16

the potential difference that causes breakdown of insulation is called

Answer 16

breakdown voltage

Question 17

what is the main purpose of soldering an electrical splice?

Answer 17

to make a good electrical contact