Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Electricity does not occupy space or have physical or chemical properties; it
is, however, a form of:
a. | matter | c. | energy | b. | substance | d. | generating |
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2.
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A metal substance that is a particularly good conductor of electricity
is:
a. | rubber | c. | glass | b. | silk | d. | copper |
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3.
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The path of an electric current from the generating source back to the original
source is a(n):
a. | incomplete circuit | c. | insulating current | b. | complete circuit | d. | direct circuit |
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4.
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Rubber, silk, wood, and glass are common examples of:
a. | modalities | c. | insulators | b. | currents | d. | converters |
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5.
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The even-flowing electric current that travels in one direction only is:
a. | indirect current | c. | electrode current | b. | alternating current | d. | direct current |
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6.
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A converter is an apparatus that changes direct current to:
a. | indirect current | c. | electrodes | b. | converted current | d. | alternating
current |
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7.
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Rapid and interrupted current that flows in one direction and then in the
opposite direction is:
a. | alternating current | c. | automatic current | b. | auxiliary current | d. | indirect
current |
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8.
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The unit that measures the pressure or force that pushes the flow of electrons
forward through a conductor is a(n):
a. | amp | c. | rectifier | b. | electron | d. | volt |
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9.
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Cordless electric clippers and battery chargers convert AC current from a wall
unit to DC current needed to recharge DC batteries with the use of:
a. | a rectifier | c. | a converter | b. | ohms | d. | a conductor |
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10.
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The term used to measure the strength of an electric current is:
a. | electricity | c. | amp | b. | cathode | d. | volt |
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11.
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A measurement of how much electricity is being used in 1 second is a(n):
a. | watt | c. | kilowatt | b. | ohm | d. | volt |
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12.
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The current for facial and scalp treatments is measured in:
a. | watts | c. | voltages | b. | kilowatts | d. | milliamperes |
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13.
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The special device that prevents excessive current from passing through a
circuit and overloading the circuit is a(n):
a. | amp | c. | fuse | b. | ampere | d. | insulator |
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14.
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Careless electrical connections and overloaded circuits can result in an
electric shock, burn, or:
a. | fire | c. | indirect ray | b. | connection | d. | electrons |
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15.
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The electrical appliance connection that supplies current to the circuit is
the:
a. | prong connection | c. | live connection | b. | indirect connection | d. | grounded
connection |
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16.
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Electronic facial treatments are commonly referred to as:
a. | electrotherapy | c. | receptacle | b. | electronics | d. | electromagnetic |
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17.
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A glass or metal applicator that directs electric current from a machine to the
client’s skin is a(n):
a. | electrode | c. | converter | b. | cord | d. | rectifier |
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18.
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The indication of the negative or positive pole of an electric current is
referred to as the:
a. | electrode | c. | ampere | b. | current | d. | polarity |
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19.
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The positive electrode is called the:
a. | anode | c. | cathode | b. | device | d. | galvanic |
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20.
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The most commonly used modality is:
a. | constant current | c. | galvanic current | b. | iontophoresis | d. | alternating
current |
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21.
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Introducing water-soluble products into the skin with the use of electric
current is a process known as:
a. | desincrustation | c. | polarity | b. | iontophoresis | d. | anode |
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22.
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Cataphoresis forces acidic substances into deeper tissues using galvanic current
from the:
a. | positive toward the negative pole | c. | negative toward the positive
pole | b. | inactive toward the electric pole | d. | negative toward the ohm
pole |
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23.
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The process frequently used to treat acne and milia and soften and emulsify
deposits in the hair follicles is:
a. | betaphoresis | c. | desincrustation | b. | metaphoric | d. | anaphoresis |
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24.
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Thermal or heat-producing current with a high rate of oscillation or vibration
is:
a. | Tesla current | c. | direct current | b. | acidic current | d. | electrode
current |
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25.
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Rays with long wavelengths that penetrate the deepest and produce more heat than
visible light are:
a. | natural rays | c. | radio waves | b. | ultraviolet rays | d. | infrared rays |
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26.
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Infrared lamps used during hair treatments and to process hair color should be
operated at a distance of at least:
a. | 10 inches | c. | 30 inches | b. | 20 inches | d. | 40 inches |
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27.
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A combination light of all the visible rays of the spectrum is referred to
as:
a. | white light | c. | natural light | b. | blue light | d. | infrared light |
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28.
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Rays with short wavelengths that are the least penetrating, produce chemical
effects, and kill germs are:
a. | blue light | c. | ultraviolet rays | b. | infrared rays | d. | red light rays |
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29.
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Current that should not be used on clients who are pregnant, have high blood
pressure, or have a pacemaker is:
a. | white light | c. | alternating current | b. | Tesla high-frequency | d. | battery current |
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30.
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The distance between two successive peaks is called the:
a. | radiation length | c. | therapy length | b. | wavelength | d. | wave distance |
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