Foundations Chapter 7 Electricity

Which of the following reactions can be expected when using anaphoresis? Select one: a. a stimulation of nerves b. a closing of pores c. a decrease in blood supply d. a hardening of tissues

a stimulation of nerves

Electricity use impacts ______ of the services that beauty professionals offer their clients. Select one: a. all b. about half c. a small handful d. most

all

The electromagnetic spectrum is the name given to ______. Select one: a. all forms of energy except for gamma rays b. all of the forms of energy that exist c. all forms of microwaves d. all forms of energy except for X-rays

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? Select one: a. a modality b. an ohm c. an electrode d. a fuse

an electrode

Which of the following measures the resistance of electrical current? Select one: a. a volt b. an ohm c. a watt d. an ampere

an ohm

A condition that prohibits certain treatments is called a ______. Select one: a. contraindication b. conductor c. catalyst d. cathode

contraindication

In order to practice good electrical safety, ALWAYS ______. Select one: 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

The use of electrical currents to treat the skin is called ______. Select one: a. electrotherapy b. electrocution c. electrode d. electrolysis

electrotherapy

Which percentage of natural sunlight is visible, making up the visible spectrum of light? Select one: a. 70% b. 35% c. 10% d. 95%

35%

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

Advanced electrical machines require an understanding of electrical theory.

Why is copper used in electrical wiring and electrical motors? Select one: a. Because it is a good conductor. b. Because it is inexpensive. c. Because it is a good insulator. d. Because it provides safeguards against electrocution.

Because it is a good conductor.

Why is grounding important? Select one: a. Because it turns direct current into alternating current. b. Because it prevents downed wires in storms. c. Because it turns conductors into nonconductors. d. Because it protects against electrical shock.

Because it protects against electrical shock.

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

Cindy should quickly unplug the device from the outlet.

Which of the following BEST differentiates between direct current and alternating current? Select one: a. Direct current flows in one direction, whereas alternating current flows back and forth. b. Direct current flows back and forth, whereas alternating current flows in one direction. c. Direct current is the true form of electrical current, whereas alternating current is not. d. Direct current is not truly an electrical current, whereas alternating current is.

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

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

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

Which of the following is TRUE of electricity? Select one: a. It has mass, but occupies no space. b. It occupies space, but has no mass. c. It does not occupy space or have mass. d. It occupies space and has mass.

It does not occupy space or have mass.

Which of the following is TRUE of a galvanic current? Select one: a. It does not produce a chemical change. b. It has a positive and a negative pole. c. It is an indirect current. d. It is a broken, inconsistent current.

It has a positive and a negative pole.

Which of the following is TRUE of alternating current? Select one: a. It is produced by chemical means. b. It is most often found in batteries. c. It travels in only one direction. d. It is a rapid, interrupted current.

It is a rapid, interrupted current.

Which of the following is TRUE of fluorescent light? Select one: a. It is a yellow-gold light. b. It is warmer than natural sunlight. c. It is cooler than natural sunlight. d. It is a type of incandescent light.

It is cooler than natural sunlight.

Which of the following is TRUE of ultraviolet light? Select one: a. It slows chemical reactions. b. It has a long wavelength. c. It is hot light. d. It is invisible.

It is invisible.

Which of the following is TRUE of infrared light? Select one: a. It is galvanic. b. It is visible to the eye. c. It produces heat. d. It is a bluish light.

It produces heat.

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

Which of the following BEST differentiates between long wavelengths and short wavelengths? Select one: a. Long wavelengths are visible; short wavelengths are not. b. Short wavelengths have low frequency; long wavelengths have high frequency. c. Long wavelengths have low frequency; short wavelengths have high frequency. d. Short wavelengths are visible; long wavelengths are not.

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

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

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

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? Select one: a. The extension cord's gauge is too large to support the amperage rating of the electrical device. b. The electrical device has more volts than the outlet it is plugged into. c. The electrical device has fewer volts than the outlet it is plugged into. d. The extension cord's gauge is too small 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.

Which of the following BEST differentiates a positive electrode from a negative electrode? Select one: a. The positive electrode has an electric charge; the negative electrode does not. b. The positive electrode is called a cathode; the negative electrode is called an anode. c. The positive electrode is called an anode; the negative electrode is called a cathode. 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.

Which of the following is TRUE of the poles of an electric current? Select one: a. They are either left or right. b. They are either positive or negative. c. They are either conductive or nonconductive. d. They are either direct or alternating.

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? Select one: a. Unplug the appliance from the wall. b. Continue using the appliance with caution. c. Attempt to repair the appliance immediately. d. Give the appliance a short break before using it again.

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? Select one: a. 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. b. As she progresses toward a successful career, her clients will become more and more expectant of her knowledge in electricity. c. 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. d. Without an understanding of basic electricity, she will not be able to use professional electrical appliances effectively and safely.

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? Select one: a. a basement b. an office building c. a bedroom d. a bathroom

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? Select one: a. an ampere b. a conductor c. an alternating current d. a circuit breaker

a circuit breaker

Which of the following reactions can be expected when using cataphoresis? Select one: a. a stimulation of nerves b. an increase in blood supply c. a closing of pores d. a softening of tissues

a closing of pores

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? Select one: a. a fuse b. an ampere c. a circuit breaker d. a nonconductor

a fuse

Which of the following types of energy is most likely associated with nuclear power plants? Select one: a. X-rays b. gamma rays c. microwaves d. radio waves

gamma rays

The third circular electrical connection on a three-prong plug is called a ______. Select one: a. circuit breaker b. ground fault interrupter c. grounding pin d. fuse

grounding pin

What does a watt measure? Select one: a. the resistance of an electric current b. how much electric energy is being used in one second c. the strength of an electric current d. the pressure or force that pushes electric current through a conductor

how much electric energy is being used in one second

Which of the following is Tesla high-frequency current used for? Select one: a. improving germicidal action b. slowing blood circulation c. decreasing skin metabolism d. decreasing elimination and absorption

improving germicidal action

How does energy move through space? Select one: a. electromagnetically b. by physical force c. in waves d. mechanically

in waves

Which of the following types of effects does electricity exhibit? Select one: a. magnetic b. magnetic and thermal c. magnetic and chemical d. magnetic, thermal, and chemical

magnetic, thermal, and chemical

Light therapy is also known as ______. Select one: a. heat therapy b. radiotherapy c. laser therapy d. phototherapy

phototherapy

For which of the following would microcurrent be MOST useful? Select one: a. decreasing muscle tone b. slowing healing time for acne lesions c. reducing redness and inflammation d. removing the natural protective barrier of the skin

reducing redness and inflammation

Which of the following is an example of a conductor? Select one: a. rubber b. tap water c. cement d. glass

tap water

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? Select one: a. the ultraviolet lighting just above Wilson's station b. the incandescent lighting just above Wilson's station c. the fluorescent lighting just above Wilson's station d. the natural sunlight that comes in from the window beside Wilson's station

the fluorescent lighting just above Wilson's station

Which type of light prompts the skin to produce beneficial vitamin D? Select one: a. fluorescent light b. galvanic light c. ultraviolet light d. infrared light

ultraviolet light

Which of the following is a good example of an insulator? Select one: a. copper b. steel c. tap water d. wood

wood