Chapter 07: Electricity & Electrical Safety

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: an ampere B: a fuse C: a circuit breaker D: a nonconductor

a fuse

Cornelius is opening a beauty business. He will need to have a thorough understanding of electricity for all EXCEPT which of the following reasons? A: Cornelius will need to be able to quickly repair electrical devices when they malfunction. B: Cornelius will rely on a variety of electrical devices. C: Cornelius will rely on lighting and air temperature controls for the comfort of his clients. D: Cornelius will need to be able to properly care for a variety of electrical devices.

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

Which of the following is TRUE of electricity? A: It occupies space and has mass. B: It occupies space, but has no mass. C: It does not occupy space or have mass. D: It has mass, but occupies no space.

It does not occupy space or have mass.

The electromagnetic spectrum is the name given to ______. A: all forms of energy except for gamma rays B: all forms of microwaves AC: all forms of energy except for X-rays D: all of the forms of energy that exist

all of the forms of energy that exist

Which of the following reactions can be expected when using cataphoresis? A: an increase in blood supply B: a stimulation of nerves C: a softening of tissues D: a closing of pores

closing of pores

What does a watt measure? A: the resistance of an electric current B: how much electric energy is being used in one second C: the pressure or force that pushes electric current through a conductor D: the strength of an electric current

how much electric energy is being used in one second

How does energy move through space? A: electromagnetically B: in waves C: mechanically D: by physical force

in waves

Which of the following types of effects does electricity exhibit? A: magnetic and chemical B: magnetic, thermal, and chemical C: magnetic D: magnetic and thermal

magnetic, thermal, and chemical

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? A: ultraviolet B light B: infrared light C: visible light D: ultraviolet C light

ultraviolet B light

Which of the following is a good example of an insulator? A: wood B: tap water C: copper D: steel

wood

Which percentage of natural sunlight is visible, making up the visible spectrum of light? A: 10% B: 35% C: 95% D: 70%

35%

Which of the following is TRUE of electricity and the beauty and wellness industry? A: Most beauty professionals will not interact directly with electricity. B: Most of the equipment that beauty professionals deal with is very dangerous. C: Advanced electrical machines require an understanding of electrical theory. D: Electricity use in the beauty industry is limited to clippers and hair dryers.

Advanced electrical machines require an understanding of electrical theory.

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? A: GFIs are most useful in salons, spas, and barbershops because when multiple appliances are in use, GFIs must be in place. B: GFIs are required wherever direct current is transferred to alternate current (such as in bathrooms). C: GFIs are most useful in salons, spas, and barbershops because appliances that heat up can only operate when a GFI is in place. D: GFIs are required in places where shock hazard are likely (such as near any running or sitting water).

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

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? A: Gregory is at high risk for developing skin cancer. B: Gregory has skin cancer. C: Gregory is developing premature wrinkles. D: Gregory is very low on vitamin D.

Gregory is very low on vitamin D.

Which of the following is TRUE of ultraviolet light? A: It slows chemical reactions. B: It is invisible. C: It has a long wavelength. D: It is hot light.

It is invisible.

Which of the following is TRUE of infrared light? A: It produces heat. B: It is galvanic. C: It is visible to the eye. D: It is a bluish light.

It produces heat.

Which of the following BEST differentiates between long wavelengths and short wavelengths? A: Long wavelengths are visible; short wavelengths are not. B: Long wavelengths have low frequency; short wavelengths have high frequency. C: Short wavelengths have low frequency; long wavelengths have high frequency. D: Short wavelengths are visible; long wavelengths are not.

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

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? A: The electrical device has more volts than the outlet it is plugged into. B: The extension cord's gauge is too small to support the amperage rating of the electrical device. C: The electrical device has fewer volts than the outlet it is plugged into. D: The extension cord's gauge is too large to support the amperage rating of the electrical device.

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

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? A: Throw the device away and immediately call the fire department. B: Unplug the device and attempt to repair it before trying to plug it in again. C: Unplug the device immediately and use another until that one can be repaired. D: Wait for five minutes to see if the sparking stops, then continue using the device.

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

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? A: Yell to Wanda to drop the device immediately. B: Yell to Wanda to keep hold of the device and grab a conductor with her other hand. C: Run over to Wanda and grab the device out of her hand. D: Yell to Wanda to keep hold of the device and grab an insulator with her other hand.

Yell to Wanda to drop the device immediately.

In which of the following locations would a GFI MOST likely be required? A: an office building B: a bedroom C: a bathroom D: a basement

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: a conductor B: a circuit breaker C: an ampere D: an alternating current

a circuit breaker

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: a direct current B: an indirect current C: an insulator D: a nonconductor

a direct current

Which of the following reactions can be expected when using anaphoresis? A: a stimulation of nerves B: a decrease in blood supply C: a hardening of tissues D: a closing of pores

a stimulation of nerves

Electricity use impacts ______ of the services that beauty professionals offer their clients. A: all B: most C: about half D: a small handful

all

Which of the following is used as an applicator for directing electric current from an electrotherapy device to the client's skin? A: an ohm B: an electrode C: a fuse D: a modality

an electrode

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? A: an ohm B: an ampere C: a volt D: a watt

an ohm

Which of the following measures the resistance of electrical current? A: an ohm B: an ampere C: a volt D: a watt

an ohm

Why is grounding important? A: Because it turns direct current into alternating current. B: Because it protects against electrical shock. C: Because it turns conductors into nonconductors. D: Because it prevents downed wires in storms.

because it protects against electrical shock.

In order to practice good electrical safety, ALWAYS ______. A: attempt to repair electrical appliances when they malfunction B: twist electrical cords to protect against a short circuit C: attempt to clean around electrical outlets while equipment is plugged in D: disconnect appliances when they are not in use

disconnect appliances when they are not in use

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? A: Adapting a three-pronged plug to fit into a two-pronged outlet switches direct current into alternating current. B: Adapting a three-pronged plug to fit into a two-pronged outlet makes the conductor an inductor. C: Adapting a three-pronged plug to fit into a two-pronged outlet eliminates the intended grounding. D: Adapting a three-pronged plug to fit into a two-pronged outlet changes the appliance's amperage.

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

Why is copper used in electrical wiring and electrical motors? A: Because it provides safeguards against electrocution. B: Because it is a good conductor. C: Because it is inexpensive. D: Because it is a good insulator.

Because it is a good conductor.

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? A: Brenda has done nothing wrong. B: Brenda should not clean the appliances while they are plugged in. C: Brenda should leave all appliance cords out in the middle of the floor so that people can see them. D: Brenda should unplug the appliances by the cord, not the plug.

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

While working on a customer, Cindy accidentally dropped her electrical device into a sink full of water. Which of the following should Cindy do? A: Cindy should run over to the circuit breaker panel and shut down all power to the establishment. B: Cindy should get everyone out of the establishment and call the fire department. C: Cindy should quickly grab the device out of the sink full of water. D: Cindy should quickly unplug the device from the outlet.

Cindy should quickly unplug the device from the outlet.

Which of the following BEST differentiates between direct current and alternating current? A: Direct current is the true form of electrical current, whereas alternating current is not. B: Direct current flows back and forth, whereas alternating current flows in one direction. C: Direct current is not truly an electrical current, whereas alternating current is. D: Direct current flows in one direction, whereas alternating current flows back and forth.

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? A: Flip the main circuit switch on the circuit breaker. B: Lower the amperage of the appliances in use. C: Replace the conductors in the establishment with inductors. D: Change the current in the establishment from direct to alternating.

Flip the main circuit switch on the circuit breaker.

Which of the following is TRUE of a galvanic current? A: It is an indirect current. B: It is a broken, inconsistent current. C: It has a positive and a negative pole. D: It does not produce a chemical change.

It has a positive and a negative pole.

Which of the following is TRUE of alternating current? A: It travels in only one direction. B: It is a rapid, interrupted current. C: It is produced by chemical means. D: It is most often found in batteries.

It is a rapid, interrupted current.

Which of the following is TRUE of fluorescent light? A: It is warmer than natural sunlight. B: It is cooler than natural sunlight. C: It is a type of incandescent light. D: It is a yellow-gold light.

It is cooler than natural sunlight.

What is TRUE of a wire that is not large enough to carry the electrical current passing through it? A: It will overheat. B: It will not power the device. C: It will electrocute the user. D: It will save energy.

It will overheat.

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? A: James wants to eliminate some of his age spots. B: James wants to get rid of the wrinkles on his forehead. C: James wants to remove the hair on his back. D: James wants to lighten his hair color.

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? A: Manny should not have disposed of his old equipment. B: Manny should not have cleaned out and made extra space at his station. C: Manny should not have purchased any batteries. D: Manny has not made any mistakes.

Manny should not have purchased any batteries.

Which of the following is NOT good electrical safety advice? A: Read all electrical safety instructions carefully. B: Keep electrical cords off the floor and away from everyone's feet. C: Inspect all electrical equipment regularly. D: Pull on the cord, not the plug, when disconnecting an electrical appliance.

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

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? A: Rachel told you that she feels she needs to increase both elimination and absorption. B: Rachel told you that she has bad acne. C: Rachel told you that her condition is specific to her scalp. D: Rachel told you that she is pregnant.

Rachel told you that she is pregnant.

Which of the following BEST differentiates a positive electrode from a negative electrode? A: The positive electrode is called an anode; the negative electrode is called a cathode. B: The positive electrode has an electric charge; the negative electrode does not. C: The positive electrode is called a cathode; the negative electrode is called an anode. D: The positive electrode has no electric charge; the negative electrode does.

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

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? A: The amperage of the appliances is rated higher than the cords being used. B: The resistance (ohms) is stronger than the force (volts). C: The amperage of the appliances is rated higher than the cords being used. D: The force (volts) is stronger than the resistance (ohms).

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

Which of the following is TRUE of the poles of an electric current? A: They are either left or right. B: They are either direct or alternating. C: They are either conductive or nonconductive. D: They are either positive or negative.

They are either positive or negative.

Which of the following should you do if you receive a light shock sensation while using an electrical appliance? A: Continue using the appliance with caution. B: Give the appliance a short break before using it again. C: Unplug the appliance from the wall. D: Attempt to repair the appliance immediately.

Unplug the appliance from the wall.

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? A: In order to someday make it as her own salon, spa, or barbershop owner, economic viability will be reliant on her skills as an electrician. B: Without an understanding of basic electricity, she will not be able to use professional electrical appliances effectively and safely. C: As she progresses toward a successful career, her clients will become more and more expectant of her knowledge in electricity. D: Electricity is the backbone of the beauty and wellness industry and if she lacks a solid understanding of it she cannot be a part of that industry.

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

A condition that prohibits certain treatments is called a ______. A: cathode B: contraindication C: conductor D: catalyst

contraindication

The use of electrical currents to treat the skin is called ______. A: electrode B: electrotherapy C: electrolysis D: electrocution

electrotherapy

Which of the following types of energy is most likely associated with nuclear power plants? A: gamma rays B: X-rays C: radio waves D: microwaves

gamma rays

The third circular electrical connection on a three-prong plug is called a ______. A: fuse B: ground fault interrupter C: grounding pin D: circuit breaker

grounding pin

lycia 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? A: a heavier gauge wire B: a rag C: heavy rubber tape D: disinfecting wipes

heavy rubber tape

Which of the following is Tesla high-frequency current used for? A: decreasing skin metabolism B: improving germicidal action C: slowing blood circulation D: decreasing elimination and absorption

improving germicidal action

Light therapy is also known as ______. A: heat therapy B: radiotherapy C: phototherapy D: laser therapy

phototherapy

For which of the following would microcurrent be MOST useful? A: reducing redness and inflammation B: removing the natural protective barrier of the skin C: decreasing muscle tone D: slowing healing time for acne lesions

reducing redness and inflammation

Which of the following is an example of a conductor? A: rubber B: cement C: glass D: tap water

tap water

Which type of light prompts the skin to produce beneficial vitamin D? A: fluorescent light B: infrared light C: galvanic light D: ultraviolet light

ultraviolet light