Chapter 7

In order to practice good electrical safety, ALWAYS ________________.

disconnect appliances when they are not in use

Which percentage of natural sunlight is visible, making up the visible spectrum of light?

35%

Why is copper used in electrical wiring and electrical motors?

Because it is a good conductor.

Light therapy is also known as ______________.

phototherapy

While working on a customer, Cindy accidentally dropped her electrical device into a sink full of water. Which of the following should Cindy do?

Cindy should quickly unplug the device from the outlet

Cornelius is opening a beauty business. He will need to have a thorough understanding of electricity for all EXCEPT which of the following reasons?

Cornelius will need to be able to quickly repair electrical devices when they malfunction.

Which of the following is TRUE of electricity?

It does not occupy space or have mass

What is TRUE of a wire that is not large enough to carry the electrical current passing through it?

It will overheat.

Which of the following BEST differentiates between long wavelengths and short wavelengths?

Long wavelengths have low frequency; short wavelengths have high frequency.

The electromagnetic spectrum is the name given to _________________.

all of the forms of energy that exist

Which of the following is used as an applicator for directing electric current from an electrotherapy device to the client's skin?

an electrode

For which of the following would microcurrect be MOST useful>

reducing redness and inflammation

Which of the following should you do if you receive a light shock sensation while using an electrical appliance?

unplug the appliance from the wall

of the following is a good example of an insulator?

wood

You are a worker at a high-end establishment that uses cutting-edge technology and techniques in treating clientele. Your newest client, Gregory, has just told you that his doctor is recommending UV light therapy as part of his overall path toward better health. Which of the following is MOST likely the reason why Gregory's doctor has recommended this particular type of light exposure as part of his therapy?

Gregory is very low on vitamin D

Jane noticed that as she was working on a client throughout the morning, the electrical extension cord from her electrical device to the outlet was getting hotter and hotter. Knowing this, which of the following is MOST likely true?

The extension cord's gauge is too small to support the amperage rating of the electrical device.

Which of the following is TRUE of the poles of an electric current?

They are either positive or negative

Which of the following reactions can be expected when using cataphoresis?

a closing of pores

Julie relies on a constant, even flow of electricity that is produced by chemical means for the wireless tools she uses in her daily work. What is Julie looking for?

a direct current

Klaus has noticed that, throughout the establishment, there are ground fault interrupters (GFIs) in the walls beside all sinks and in the bathrooms and the employee kitchen. Why are these types of receptacles strategically placed in these locations?

GFIs are required in places where shock hazard are likely (such as near any running or sitting water).

Jamil plugged an electrical device into the outlet on the wall and it immediately started to spark. Jamil, very startled, wasn't sure what to do. What should Jamil do?

Unplug the device immediately and use another until that one can be repaired.

Electricity use impacts ______ of the services that beauty professionals offer their clients.

all

What of the following measures the resistance of electrical current?

an ohm

The use of electrical currents to treat the skin is called ______________

electrotherapy

The third circular electrical connection on a three-prong plug is called a ______.

grounding pin

Alycia notices a prior employee tried to repair a crack in the power cord on an electrical device with an insulator. Which of the following may have been used as an insulator?

heavy rubber tape

What does a watt measure?

how much electric energy is being used in one second

Alyssa noticed that the electrical device she uses on the job has a three-pronged plug that was to be inserted into a three-pronged outlet in the wall. Since there were only two-pronged outlets in the room, however, Alyssa purchased an adapter to connect her three-pronged device into a two-pronged outlet. Why was this a bad idea?

Adapting a three-pronged plug to fit into a two-pronged outlet eliminates the intended grounding.

Which of the following is TRUE of electricity and the beauty and wellness industry?

Advanced electrical machines require understanding of electrical theory

Which of the following is TRUE of fluorescent light?

It is cooler than natural sunlight

Which of the following is TRUE of ultraviolet light?

It is invisible

Which of the following is TRUE of infrared light?

It produces heat

Maria knows that light therapy is most likely the best solution for her client, James. Assuming Maria is correct, which of the following is LEAST likely to be true of James?

James wants to lighten his hair color

Manny is excited to use his new series of hand-held appliances on his clients this week. His boss has told Manny to come in to work prepared to get used to the new equipment. All Manny knows is that the appliances are expensive and top of the line and that they run on alternating current. Manny has already cleaned off his station, made sure that he has ample space to work, properly disposed of his old appliances, and picked up plenty of long-lasting batteries for the new appliances. What mistakes, if any, has Manny made?

Manny should not have purchased any batteries

Your client, Rachel, sat down with you to discuss her client intake form before she receives Tesla high-frequency current, which is commonly used in electrical facial and scalp treatments. What might Rachel have told you that would lead you to rule out Tesla high-frequency current as a treatment option for her?

Rachel told you that she is pregnant

Jeremy is having a hard time getting his electrical equipment to work properly for his clients. The technician who came in to look at the situation advised Jeremy that the current is not able to flow through the wires efficiently. Why is this MOST likely the case?

The resistance (ohms) is stronger than the force (volts).

You are the manager of a beauty business. You are startled during a busy afternoon when one of your best beauty pros, Wanda, starts screaming that her electrical device, which she is still holding onto, is sending powerful shocks up her hand and arm. What should you do?

Yell to Wanda to drop the device immediately

A condition that prohibits certain treatment is called a __________________.

contraindication

Which of the following is Tesla high-frequency current used for?

improving germicidal action

Many of Wilson's clients complain to him that their skin always appears very bluish-green when they are sitting in his chair. Which of the following would most likely be the cause of this?

the fluorescent lighting just above Wilson's station

Why is grounding important?

Because it protects against electrical shock

As a business owner, Brenda knows the importance of electrical safety. Each evening, she is the last person to leave work. Before she leaves, she makes sure that all electrical appliances are shut off and unplugged. Any that have been left plugged in, she carefully unplugs by pulling on the plug, not the cord. Every morning, Brenda arrives early to work. Before any other employees arrive, she first plugs all of the appliances back in, then carefully cleans them. Finally, she makes sure that all cords to the appliances are tucked away and not left in the middle of the room for customers and employees to trip over. What, if anything, has Brenda done wrong?

Brenda should not clean the appliances while that are plugged in.

Which of the following BEST differentiates between direct current and alternating current?

Direct current flows in one direction, whereas alternating current flows back and forth.

Just as Sandra turned on her electrical device, all of the appliances in the business shut off and the lights went dark. It turned out that Sandra's device, added to all of the other appliances that were in use, was asking for too much amperage. Which of the following did Sandra MOST likely have to do to quickly get the power in the establishment back on?

Flip the main circuit switch on the circuit breaker

Which of the following is TRUE of a galvanic current?

It has a positive and negative pole.

Which of the following is TRUE of alternating current?

It is a rapid, interrupted current

Which of the following types of effects does electricity exhibit?

Magnetic, thermal and chemical

Which of the following is NOT good electrical safety advice?

Pull on the cord, not the plug, when disconnecting an electrical appliance.

Which of the following BEST differentiates a positive electrode from a negative electrode

The positive electrode is called an anode; the negative electrode is called a cathode.

You are an instructor of beauty and wellness courses at a local vocational school. Ursula, a student of yours, asks you why it is so important that beauty professionals have a thorough understanding of electricity. What do you tell her?

Without an understanding of basic electricity, she will not be able to use professional electrical appliances effectively and safely.

In which of the following locations would a GFI MOST likely be required?

a bathroom

Which of the following is an example of an electrical safety device that you may encounter when working in a salon, spa, or barbershop?

a circuit breaker

Which of the following is an electrical safety device that is designed to prevent excessive current from passing through a circuit by blowing out or melting when a wire becomes too hot from overloading the circuit with too much current?

a fuse

Which of the following reactions can be expected when using anaphoresis?

a stimulation of nerves

Which of the following types of energy is most likely associated with nuclear power plants?

gamma rays

How does energy move through space?

in waves

Which of the following is an example of a conductor?

tap water

Owner Samuel's client, Janine, has just learned she has skin cancer. While Janine's doctor told her that the cancer is most likely treatable, she is still concerned about further exposure and damage. She asks Samuel which type of light caused her skin cancer. Which of the following types of light most likely did so?

ultraviolet B light

Which type of light prompts the skin to produce beneficial vitamin D?

ultraviolet light