102e.04 - 102e.05 Principles of Electricity

Materials that do not allow a current to pass through them are called:

Insulators

Which of the following statements is true about fluorescent lighting?

Is an economical and long-lasting light source

Which light source is close to be adopted as the mainstream light source?

LED

Any electrical appliance activated by the flow of electric current such as a facial steamer is known as a(n):

Load

Almost everything in your salon/spa that assists you with your daily tasks could be considered a:

Machine

How many milliamperes equal one ampere?

1,000

How many watts equal one kilowatt?

1,000

The minimum distance an infrared lamp must be placed from the client's face during a facial is:

30"

Which of the following safety guidelines is important to keep in mind when using electrical equipment?

Avoid contact with water and metal surfaces

Two common sources of electric current are generators and:

Batteries

All of the following factors contribute to UV exposure EXCEPT:

Body Mass

Cords on appliances should be kept straight and free of knots, kinks and tangles to prevent:

Breaks

How does a fuse act as an electricity safety measure?

Breaks the circuit, cutting the flow of electricity when an overload occurs

Why is it dangerous to use any electrical cord with a break in it?

Can cause electrical shock

Electrons travel on a closed path, called a:

Circuit

Which of the following items is a reusable safety device that breaks the flow of current when an overload occurs?

Circuit breaker

To avoid the possibility of overloads and short circuits, safety devices are installed in appliances and buildings. Two of these devices are fuses and:

Circuit breakers

In the event of being trapped in a smoke-filled room or building, do all of the following actions EXCEPT:

Close the windows to trap the air

When a facial steamer is on and steams begins to flow, you have an example of a(n):

Closed circuit

Electric current moves along a path called a(n):

Conductor

Materials that best transport electricity are called:

Conductors

Since silver and copper transmit electricity, they are:

Conductors

The two forms of electric current are:

DC and AC

Galvanic, faradic and pulsed DC fall under what type of current?

Direct

A current in which electrons move at an even rate and flow in only one direction is called:

Direct Current (DC)

A waveform is the visual representation of the output current that varies in time, strength and:

Direction

Which of the following protocols helps prevent fires?

Dispose of frayed overexposed wires

Light, heat, chemical and magnetic changes are all produced by:

Electricity

The effect that is created when an electric current travels through a solid electrode and liquid conductor in order to produce stimulating or calming effects is called:

Electrochemical

Most of the electricity you use daily consists of a flow of tiny, negatively charged particles called:

Electrons

The use of electricity for therapeutic purposes is called:

Electrotherapy

During infrared facial treatments, always cover and protect the client's:

Eyes

(T/F) If an electrical fire occurs in the salon/spa, use water to extinguish it.

False

(T/F) Rubbing the palms of your hands together to warm them is an example of a mechanical effect.

False

Depending of its design, which type of light can create blue or cool tones?

Fluorescent

What type of outlet is recommended for installation in any area where water and electricity could come into contact?

GFCI

Which of the following materials doesn't allow current to pass through it?

Glass

A salon/spa owner wants to balance the tones of light inside. Which type of light would likely be incorporated?

Incandescent

Which of the following descriptions is a benefit of using infrared light during a facial?

Increases circulation

Plastic, rubber or paper are examples of what type of materials?

Insulating materials

Polarized outlets feature one vertical slot for the hot wire and a second, wider vertical slot for the:

Neutral wire

A unit of electric resistance is called a(n):

Ohm

When too many appliances are put on one circuit and are operated at the same time, more current flows than the line is designed to carry. This is known as:

Overload

What are the initials used to help you remember fire extinguisher use?

PASS

Jessica, a salon/spa owner wants her estheticians to each be able to run their electrical equipment independently or have several loads running at one time. Which type of wiring should be installed in her salon/spa?

Parallel

Which of the following is NOT a way for heat to be transferred from one object to another?

Phoresis

The negative poles and positive poles at the end of a circuit are known as:

Polarity

What sides of the poles is Caitlyn holding if two magnets are attracted to each other?

Positive and negative

All of the following statements are true about 240-volt current EXCEPT:

Powers small appliances

A volt is a unit of electric:

Pressure

How should cords be disconnected safely from an outlet?

Pull on plug

Which of the following steps would be performed first when using a fire extinguisher?

Pull the pin on the handle

The length of time that current is flowing is known as:

Pulse

Which of the following actions should NOT be taken if a fire results from an overload of an electric circuit?

Put water on it

Which of the following changes alternating current to direct current?

Rectifier

The wavelengths that produce the longest waves of the visible spectrum are:

Red

Incandescent light normally produces what color tones in the objects it lights?

Redder tones

What device is used to adjust the flow of an electrical current?

Rheostat

All of the following terms are types of waveforms EXCEPT:

Round

Dropping an electrical appliance into water, making it a foreign conductor causes a(n):

Short circuit

What can occur anytime a foreign conductor comes in contact with a wire carrying current to an appliance?

Short circuit

Which of the following is a type of alternating current?

Sinusoidal

A mechanical effect that can be achieved by all of the following devices EXCEPT:

Steamer

An amp is a unit of electric:

Strength

An Underwriters Laboratory (UL) designation indicates:

The appliance has been certified to operate safely under the conditions specified

Fires in electrical circuits can occur if:

Too many appliances use the same wall socket and overload the circuit

(T/F) Esthetics electrotherapy devices improve the skin's appearance by stimulation, product application enhancement and deep cleansing.

True

(T/F) Walking across a carpet in a cold, dry environment, then touching a metal object and getting a small shock is known as static electricity.

True

Which type of light can kill bacteria that cause skin infections?

Ultraviolet light

The portion of the electromagnetic spectrum humans can see is known as:

Visible light

Small doses of ultraviolet light may help the body produce:

Vitamin D

Which of the following materials is considered a conductor?

Water-containing ions

A measure of how much electrical energy is being used is known as a:

Watt

Which of the following statements is true of visible light?

Waves hit an object and are either absorbed or reflected

Which type of light can be broken into its individual wavelengths by a prism?

White