Chapter 12: The basics of Electricity Flashcards

1
Q

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

A

electricity

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2
Q

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

A

conductor

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3
Q

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

A

an electric current

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4
Q

Electricity is a…

A

form of energy

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5
Q

A substance that does not easily transmit electricity is called…

A

an insulator

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6
Q

Pure water is a…

A

poor conductor

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6
Q

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

A

wood

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7
Q

Insulators are also known as…

A

non-conductors

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8
Q

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

A

a closed loop

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9
Q

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

A

a complete

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10
Q

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

A

a direct

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11
Q

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

A

an alternating

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12
Q

A cell phone uses ……. current.

A

a direct

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13
Q

Paraffin heaters use ….. current.

A

an alternating

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14
Q

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

A

a rectifier

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15
Q

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

A

a volt

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16
Q

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

A

an ampere

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17
Q

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

A

a watt

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18
Q

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

A

an ohm

19
Q

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

A

110

20
Q

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.

A

220

21
Q

A higher amp rating indicates …..

A

a greater number of electrons and a stronger current.

22
Q

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

A

milliamperes

23
Q

Current will not flow through a conductor unless …..

A

the volts are stronger than the ohms

24
Q

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

A

per second

25
Q

The electricity in your house is measured in …..

A

kilowatts per hour

26
Q

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

A

UV light

27
Q

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

A

energy

28
Q

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

A

premature hardening

29
Q

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

A

fire

30
Q

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

A

fuse

31
Q

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

A

disconnect all appliances

32
Q

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

A

shut off

33
Q

GFCI stands for ……

A

Ground Fault Circuit Interrupter

34
Q

Which of following certifies the safety of electrical appliances?

A

underwriters laboratories

35
Q

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

A

the live connection

36
Q

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

A

to provide an additional ground

37
Q

All electrical appliances used should be ….. certified.

A

UL

38
Q

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

A

one

39
Q

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

A

find a different outlet that accommodates the plug

40
Q

Electricity is a flow of ……

A

electrons

41
Q

Most ….. are good conductors

A

metals

42
Q

A typical flashlight runs on …..

A

direct current

43
Q

Car batteries are ….. volts

A

12

44
Q

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

A

water