Chapter 12: The basics of Electricity

Question 1

The movement of particles around an atom creates pure energy is called…

Answer 1

electricity

Question 2

Any substance that easily allows the flow of electricity with little resistance is known as…

Answer 2

conductor

Question 3

The flow of electricity in a complete electric circuit is called…

Answer 3

an electric current

Question 4

Electricity is a…

Answer 4

form of energy

Question 5

A substance that does not easily transmit electricity is called…

Answer 5

an insulator

Question 6

Pure water is a…

Answer 6

poor conductor

Question 6

Rubber, silk, …….. glass, and cement are all good insulators.

Answer 6

wood

Question 7

Insulators are also known as…

Answer 7

non-conductors

Question 8

A complete electrical current is……. that conducts electricity and provides a return path for the current.

Answer 8

a closed loop

Question 9

The path of an electric current from the beginning from the generating source through conductors and back to its source is called ……… electrical circuit.

Answer 9

a complete

Question 10

A constant, even-flowing current that travels in one direction only is commonly known as ……. current

Answer 10

a direct

Question 11

Rapid and interrupted current, flowing first in one direction and then in the opposite direction, is commonly known as ……. current.

Answer 11

an alternating

Question 12

A cell phone uses ……. current.

Answer 12

a direct

Question 13

Paraffin heaters use ….. current.

Answer 13

an alternating

Question 14

If you wanted to convert AC current to DC current, you would need to use …..

Answer 14

a rectifier

Question 15

The unit that measures the pressure or force that pushes the flow of electrons forward through a complete electric circuit is called …….

Answer 15

a volt

Question 16

The unit that measures the number of electrons that flow through a complete electric circuit is called …..

Answer 16

an ampere

Question 17

A measurement of how much electricity is being used in one second is called …..

Answer 17

a watt

Question 18

A unit that measures the resistance in an electric circuit is called …..

Answer 18

an ohm

Question 19

Normal electric wall sockets that power a paraffin heater are ….. volts.

Answer 19

110

Question 20

If you needed to operate a heavy-duty appliance, such as a clothes dryer, you would typically need an outlet with a minimum of ….. volts.

Answer 20

220

Question 21

A higher amp rating indicates …..

Answer 21

a greater number of electrons and a stronger current.

Question 22

The current for facial and scalp treatments is measured in …..

Answer 22

milliamperes

Question 23

Current will not flow through a conductor unless …..

Answer 23

the volts are stronger than the ohms

Question 24

A 75-watt light bulb uses 75 watts of electricity .....

Answer 24

per second

Question 25

The electricity in your house is measured in .....

Answer 25

kilowatts per hour

Question 26

What does a light-cured nail enhancement use to harden?

Answer 26

UV light

Question 27

UV radiation has a shorter wavelength, more .......... and does not penetrate as deeply as visible light.

Answer 27

energy

Question 28

Storing heat-curing monomers in a warm place can result in discoloration and .....

Answer 28

premature hardening

Question 29

A careless electrical connection and overloaded circuits can result in an electrical shock, a burn, or .....

Answer 29

fire

Question 30

A ..... is a single-use safety device designed to provide protection from an electrical overload.

Answer 30

fuse

Question 31

to reestablish the circuit when as fuse blows, first .....

Answer 31

disconnect all appliances

Question 32

A circuit breaker will ..... when the circuit overloads.

Answer 32

shut off

Question 33

GFCI stands for ......

Answer 33

Ground Fault Circuit Interrupter

Question 34

Which of following certifies the safety of electrical appliances?

Answer 34

underwriters laboratories

Question 35

Which connection on an electric plug supplies current to the circuit?

Answer 35

the live connection

Question 36

What is the main purpose of the third prong on the three-prong plug?

Answer 36

to provide an additional ground

Question 37

All electrical appliances used should be ..... certified.

Answer 37

UL

Question 38

It is recommended that you use how many plugs per outlet?

Answer 38

one

Question 39

If an electrical plug does not fit into an outlet, you should ......

Answer 39

find a different outlet that accommodates the plug

Question 40

Electricity is a flow of ......

Answer 40

electrons

Question 41

Most ..... are good conductors

Answer 41

metals

Question 42

A typical flashlight runs on .....

Answer 42

direct current

Question 43

Car batteries are ..... volts

Answer 43

12

Question 44

Avoid contact with ..... and metal surfaces when using electrical appliances.

Answer 44

water