[qdeck dataset=”electricity”]
[i] Electricity Flashcards
[start]
[q json=”true” dataset_id=”electricity|15356e1ff06e10″ question_number=”1″] Direct Current
[a] Direct current (DC) is a constant, even-flowing current that travels in one direction only and produces a chemical reaction.
[q json=”true” dataset_id=”electricity|15350eaa08ea10″ question_number=”2″] Alternating Current
[a] Alternating current (AC) is a rapid and interrupted current, flowing first in one direction and then in the opposite direction, that produces a mechanical action.
[q json=”true” dataset_id=”electricity|1534f0656e5610″ question_number=”3″] Volts
[a] Volts (V) is the unit that measures electrical pressure, which pushes the flow of electrons forward through a conductor, similar to the way water pressure pushes water molecules through a hose.
[q json=”true” dataset_id=”electricity|1534d6c8eb8a10″ question_number=”4″] Amperes (Amps)
[a] An ampere (A) is the standard unit for measuring the strength or rate of an electric current in a conductor.
[q json=”true” dataset_id=”electricity|1534bd2c68be10″ question_number=”5″] A milliampere is one-thousandth of an
[a] ampere
[q json=”true” dataset_id=”electricity|1534a5e3f1d610″ question_number=”6″] Ohms
[a] The ohm (O) is the unit of electrical resistance in an electric current.
[q json=”true” dataset_id=”electricity|1534879f574210″ question_number=”7″] Watts
[a] The watt (W) is the unit of power (amperes multiplied by volts) and indicates how much electric energy is being used in 1 second. A kilowatt is 1,000 watts.
[q json=”true” dataset_id=”electricity|15346baec89210″ question_number=”8″] Fuse
[a] A fuse is a safety device that prevents the overheating of electrical wires by preventing excessive current from passing through a circuit.
[q json=”true” dataset_id=”electricity|1534521245c610″ question_number=”9″] Circuit Breaker
[a] A circuit breaker is a switch that automatically interrupts or shuts off an electric circuit at the first indication of an overload.
[q json=”true” dataset_id=”electricity|153441c5f28a10″ question_number=”10″] Grounding
[a] Some appliance plugs have a third circular connection called a grounding pin that guarantees a safe path to ground for electricity in the event of a short circuit or faulty wiring.
[q json=”true” dataset_id=”electricity|153431799f4e10″ question_number=”11″] Ground Fault Interrupter (GFI)
[a] A ground fault interrupter (GFI) is an outlet that senses imbalances within an electric circuit.
[q json=”true” dataset_id=”electricity|1534212d4c1210″ question_number=”12″] Define polarity
[a] The electrodes on many electrotherapy devices have one negatively charged pole and one positively charged pole.
[q json=”true” dataset_id=”electricity|15340e8cecf210″ question_number=”13″] Galvanic Current
[a] Galvanic current is a DC, using a negative and positive pole, that is reduced to a safe, low-voltage level. Galvanic current produces chemical changes when passed through body tissues and fluids, and is used to create chemical and ionic reactions in the skin.
[q json=”true” dataset_id=”electricity|1533fe4099b610″ question_number=”14″] Microcurrent
[a] Microcurrent is an extremely low level of electricity that mirrors the body’s natural electrical impulses.
[q json=”true” dataset_id=”electricity|1533f048525e10″ question_number=”15″] Tesla High-Frequency Current
[a] Tesla high-frequency current is characterized by a high rate of oscillation that produces heat.
[q json=”true” dataset_id=”electricity|1533dffbff2210″ question_number=”16″] Visible light makes up only __ percent of natural sunlight and is made up of a spectrum of colors, with violet at one end and red at the other.
[a] 35%
[q json=”true” dataset_id=”electricity|1533d203b7ca10″ question_number=”17″] Ultraviolet Light
[a] Ultraviolet light, also known as cold light or actinic light, makes up 5 percent of natural sunlight.
[q json=”true” dataset_id=”electricity|1533c1b7648e10″ question_number=”18″] Infrared Light
[a] Infrared light has a longer wavelength when compared to visible light and penetrates more deeply into the body.
[q json=”true” dataset_id=”electricity|1533b16b115210″ question_number=”19″] Light therapy
[a] Light therapy, also known as phototherapy, is the application of specific wavelengths of the light spectrum to the skin for the treatment of specific disorders or conditions.
[q json=”true” dataset_id=”electricity|1533a11ebe1610″ question_number=”20″] Lasers
[a] Lasers are a type of medical device that uses electromagnetic radiation and a medium (solid, liquid, gas, or semi-conductor) for hair removal and various skin treatments.
[q json=”true” dataset_id=”electricity|153390d26ada10″ question_number=”21″] A light-emitting diode
[a] A light-emitting diode is a medical device used to reduce acne, increase skin circulation, and improve collagen content in the skin.
[q json=”true” dataset_id=”electricity|153382da238210″ question_number=”22″] therapeutic lamps
[a] In the barbershop, therapeutic lamps may be a more practical solution for delivering light therapies associated with scalp and skin treatments
[q json=”true” dataset_id=”electricity|1533728dd04610″ question_number=”23″] The two types of electrical current are
[a] direct current (DC) and alternating current (AC).
[q json=”true” dataset_id=”electricity|153362417d0a10″ question_number=”24″] Devices used for electrical safety include
[a] fuses, circuit breakers, and ground fault interrupters (GFIs).
[q json=”true” dataset_id=”electricity|1533544935b210″ question_number=”25″] Three electric modalities include
[a] galvanic current, microcurrent, and Tesla high-frequency current.
[q json=”true” dataset_id=”electricity|153341a8d69210″ question_number=”26″] Light can be either
[a] visible or invisible; ultraviolet rays and infrared rays are forms of invisible light rays
[q json=”true” dataset_id=”electricity|1533315c835610″ question_number=”27″] Lasers, light-emitting diodes (LEDs), and therapeutic lamps are used as forms of
[a] light therapy in the barbershop.
[q json=”true” dataset_id=”electricity|15332110301a10″ question_number=”28″] Direct current is
[a] a constant, even-flowing current that travels in one direction only and produces a chemical reaction.
[q json=”true” dataset_id=”electricity|153310c3dcde10″ question_number=”29″] Alternating current is
[a] a rapid and interrupted current, flowing first in one direction and then in the opposite direction, that produces a mechanical action.
[q json=”true” dataset_id=”electricity|1532db36cb6210″ question_number=”30″] A fuse is a
[a] safety device that prevents the overheating of electrical wires by preventing excessive current from passing through a circuit. The fuse blows or melts when the wire becomes too hot, which happens when the circuit is overloaded with too much current from too many appliances or if faulty equipment is used. To reestablish the circuit a new fuse must be inserted
[q json=”true” dataset_id=”electricity|1532bf463cb210″ question_number=”31″] A circuit breaker is a
[a] switch that automatically interrupts or shuts off an electric circuit at the first indication of an overload. Circuit breakers have replaced fuses and supply the same safety control as fuses did against overloaded lines and faulty electrical apparatus. Circuit breakers do not require replacement. They can also be reset
[q json=”true” dataset_id=”electricity|1532a7fdc5ca10″ question_number=”32″] A ground fault interrupter is a
[a] life-saving device that senses imbalances within an electric circuit. It pops open when it senses a ground fault or current leaking to ground.
[q json=”true” dataset_id=”electricity|153293095ac610″ question_number=”33″] Tesla high-frequency current is
[a] characterized by a high rate of oscillation that produces heat. It is commonly called the violet ray and is used for both scalp and facial treatments. Tesla current does not cause muscular contractions but creates either stimulating or soothing effects.
[q json=”true” dataset_id=”electricity|15327bc0e3de10″ question_number=”34″] Galvanic current is a
[a] constant DC with a negative and positive pole, which is reduced to a safe, low-voltage level. Galvanic current produces chemical changes when passed through body tissues and fluids, and is used to create chemical and ionic reactions in the skin
[q json=”true” dataset_id=”electricity|15325b283d6610″ question_number=”35″] Microcurrent is an
[a] extremely low level of electricity that is directed only to the specific area being treated and that does not travel throughout the entire body. Microcurrent can be used for iontophoresis, firming, toning, and soothing the skin, and can help to heal inflamed tissue.
[q json=”true” dataset_id=”electricity|153243dfc67e10″ question_number=”36″] What does polarity indicate?
[a] Polarity indicates the negative or positive pole of an electric current.
[q json=”true” dataset_id=”electricity|15322a4343b210″ question_number=”37″] Explain the differences between visible and invisible light rays.
[a] Visible light is the part of the electromagnetic spectrum that can be seen and makes up 35 percent of natural sunlight. Invisible rays are beyond the visible spectrum of light and make up 65 percent of natural sunlight. Ultraviolet rays and infrared rays are forms of invisible light rays.
[q json=”true” dataset_id=”electricity|153210a6c0e610″ question_number=”38″] Explain the differences between ultraviolet and infrared light rays.
[a] Ultraviolet or cold rays have short wavelengths and are less penetrating than infrared rays. Infrared rays are long rays, have greater penetration, and produce more heat.
[q json=”true” dataset_id=”electricity|1531fbb255e210″ question_number=”39″] What conditions can be treated with ultraviolet light rays; and what is the recommended range of distance between the lamp and the skin?
[a] Ultraviolet rays can be used to treat tinea, seborrhea, dandruff, and acne conditions at a distance of 30 to 36 inches from the skin.
[q json=”true” dataset_id=”electricity|1531e215d31610″ question_number=”40″] Explain the effects of infrared light rays on the skin.
[a] Infrared rays heat and relax the skin without increasing body temperature. They dilate blood vessels, increase blood circulation and metabolism, and lead to chemical changes within skin tissues. Infrared rays also soothe nerves, relieve muscular pain, and increase the production of perspiration and oil on the skin.
[q json=”true” dataset_id=”electricity|1531c879504a10″ question_number=”41″] What is light therapy?
[a] Light therapy is the application of specific wavelengths of the light spectrum to the skin for the treatment of specific disorders or conditions.
[q json=”true” dataset_id=”electricity|15319794569610″ question_number=”42″] List four light-therapy treatments used in the beauty industry.
[a] Low-level light therapy (or low-level laser therapy), lasers, light-emitting diodes, and therapeutic lamps.
[q json=”true” dataset_id=”electricity|15317df7d3ca10″ question_number=”43″] The flow of electricity along a conductor is known as a(n)
[a] electrical current
[q json=”true” dataset_id=”electricity|1531690368c610″ question_number=”44″] Rubber or silk may serve as a(n)
[a] insulator
[q json=”true” dataset_id=”electricity|153151baf1de10″ question_number=”45″] A metal, such as copper wire, serves as a(n)
[a] conductor
[q json=”true” dataset_id=”electricity|15313cc686da10″ question_number=”46″] An adjustable resistor that is used for controlling the current in a circuit is called a(n)
[a] rheostat
[q json=”true” dataset_id=”electricity|1531257e0ff210″ question_number=”47″] A(n) ____________ current is a constant, even-flowing current that travels in one direction.
[a] direct
[q json=”true” dataset_id=”electricity|15310e35990a10″ question_number=”48″] A _________ is an apparatus that changes direct current to alternating current .
[a] converter
[q json=”true” dataset_id=”electricity|1530f499163e10″ question_number=”49″] Electric clippers and hair dryers are examples of barbering tools that use _________ current.
[a] alternating
[q json=”true” dataset_id=”electricity|1530dfa4ab3a10″ question_number=”50″] The unit of electrical pressure, which pushes the flow of electrons through a conductor, is the
[a] volt
[q json=”true” dataset_id=”electricity|1530a31b761210″ question_number=”51″] The ampere is the unit for measuring the _________ of an electric current.
[a] strength
[q json=”true” dataset_id=”electricity|15308282cf9a10″ question_number=”52″] The ohm is the unit of electrical
[a] resistance
[q json=”true” dataset_id=”electricity|1530669240ea10″ question_number=”53″] The current used in facial and scalp treatments is measured in
[a] milliamperes
[q json=”true” dataset_id=”electricity|15302a090bc210″ question_number=”54″] A _________ is a safety device that prevents excessive current from passing through a circuit.
[a] fuse
[q json=”true” dataset_id=”electricity|1530106c88f610″ question_number=”55″] All electrical appliances used in the barbershop should be
[a] UL-certified
[q json=”true” dataset_id=”electricity|152fca93243e10″ question_number=”56″] The different types of currents used in facial and scalp treatments are called
[a] modalities
[q json=”true” dataset_id=”electricity|152fb0f6a17210″ question_number=”57″] A(n) __________ is an applicator that directs electric current from the machine to the client’s skin.
[a] electrode
[q json=”true” dataset_id=”electricity|152f76c1782e10″ question_number=”58″] The high-frequency current commonly used in the barbershop is _________ current.
[a] Tesla
[q json=”true” dataset_id=”electricity|152f667524f210″ question_number=”59″] High-frequency electrodes are made of _________ metal.
[a] glass
[q json=”true” dataset_id=”electricity|152f5628d1b610″ question_number=”60″] Treatment by means of light rays is called
[a] phototherapy
[q json=”true” dataset_id=”electricity|152f45dc7e7a10″ question_number=”61″] Visible light makes up about _______ percent of natural sunlight.
[a] 35
[q json=”true” dataset_id=”electricity|152f35902b3e10″ question_number=”62″] ___________ rays are used in tanning booths and penetrate deeply into skin tissue.
[a] UVA
[q json=”true” dataset_id=”electricity|152f2543d80210″ question_number=”63″] The light that produces germicidal and chemical benefits is _________ light.
[a] white
[q json=”true” dataset_id=”electricity|152f14f784c610″ question_number=”64″] The light that produces heat and creates a stimulating effect is ________ light.
[a] red
[q json=”true” dataset_id=”electricity|152f025725a610″ question_number=”65″] Ultraviolet rays produce ________ effects.
[a] germicidal
[q json=”true” dataset_id=”electricity|152ee8baa2da10″ question_number=”66″] Ultraviolet rays are applied _________ inches from the skin.
[a] 30 to 36
[q json=”true” dataset_id=”electricity|152e86f0af7210″ question_number=”67″] On average, infrared rays are applied __________ inches from the skin.
[a] 30
[/qdeck]