Foundations: Electricity & Electrical Safety Exam Review Flashcards
The movement of electrons from one atom to another along a conductor is called _______.
a) an electric charge
b) electricity
c) energy flow
d) sparks
The answer is b:
Electricity
Electric wires can be covered with a material that does not transmit electricity, such as rubber or plastic coating. This material is known as a(n) ______.
a) insulator
b) conductor
c) circuit
d) fuse
The answer is a:
Insulator
An apparatus that changes direct current to alternating current is a(n) _______.
a) rectifier
b) circuit breaker
c) inverter
d) fuse box
The answer is c:
Inverter
The term ______ current refers to a rapid and interrupted current, flowing first in one direction and then in the opposite direction.
a) rectified
b) alternating
c) active
d) direct
The answer is b:
Alternating
The unit that measures the pressure or force that pushes the electric current forward through a conductor is a(n) _________.
a) amp
b) watt
c) ohm
d) volt
The answer is d:
Volt
Which unit measures the resistance of an electric current?
a) ohm
b) watt
c) amp
d) volt
The answer is a:
Ohm
The device that prevents excessive current from passing through a circuit is called a(n) ________.
a) fuse
b) battery
c) kilowatt
d) ampere
The answer is a:
Fuse
A switch that automatically interrupts or shuts off an electric current at the first indication of an overload is a(n) _______.
a) voltage regulator
b) ampere interrupter
c) circuit breaker
d) battery charger
The answer is c:
Circuit breaker
The negative electrode of an electrotherapy device is called a(n) ________.
a) anode
b) electron
c) carbide
d) cathode
The answer is d:
Cathode
Grounding completes a(n) _______ and carries the current safely away.
a) electric charge
b) electric circuit
c) electron flow
d) micro current
The answer is b:
Electric circuit
All of the electrical appliances you use should ________.
a) be battery operated
b) be UL certified
c) have a two-prong plug
d) be used near water
The answer is b:
Be UL certified
When using ______ current, the active electrode is the electrode used on the area to be treated.
a) alternating
b) direct
c) electric
d) galvanic
The answer is d:
Galvanic
Microcurrent can be used to _______ and restore elasticity.
a) decrease metabolism
b) increase muscle tone
c) reduce lymph
d) prevent acidic reactions
The answer is b:
Increase muscle tone
A wavelength is the distance between successive peaks of ______ waves.
a) electric
b) electromagnetic
c) galvanic
d) infared
The answer is b:
Electromagnetic
Invisible light is the light at either end of the _______ that is invisible to the naked eye.
a) electromagnetic spectrum
b) spectrum of radiance
c) radiation spectrum
d) visible spectrum of light
The answer is d:
Visible spectrum of light
Ultraviolet A (UVA) light _______.
a) is often used in tanning beds
b) has the shortest wavelength
c) is often called the burning light
d) is blocked by the ozone layer
The answer is a:
Is often used in tanning beds
Catalysts are substances that speed up ______ reactions.
a) chemical
b) acidic
c) alkaline
d) photoxic
The answer is a:
Chemical
Constant and direct current that has a positive and negative pole and produces chemical changes when it passes through the tissues and fluids of the body is known as ______ current.
a) galvanic
b) alternating
c) direct
d) high frequency
The answer is a:
Galvanic
_______ is an extremely low level of electricity that mirrors the body’s natural electrical impulses.
a) Minicurrent
b) Microcurrent
c) Milliampere
c) Biocurrent
The answer is b:
Microcurrent
The thermal or heat-producing current with a high rate of oscillation or vibration that is commonly used for scalp and facial treatments is called ______ current.
a) Tesla alternating
b) ultraviolet
c) burning
d) Tesla high-frequency
The answer is d:
Tesla high-frequency
For safety, use no more than ______ plug(s) in each outlet.
a) one
b) two
c) three
d) four
The answer is a:
One
The application of UV light must be done with the utmost care in a proper manner by a qualified professional because overexposure can lead to skin _______.
a) allergies and irritation
b) damage and cancer
c) dryness and scaling
d) over porosity and sanguinity
The answer is b:
Damage and cancer
The unit that measures how much electric energy is being used in one second is a(n) ________.
a) ohm
b) volt
c) watt
d) ampere
The answer is c:
Watt
If you see sparks when plugging or unplugging an appliance, ______.
a) fix it yourself immediately
b) do not use the appliance or outlet until approved
c) try a different outlet
d) let it rest then try again later
The answer is b:
Do not use the appliance or outlet until approved
Electric ______ refers to the flow of electricity along a conductor
a) resistance
b) insulation
c) current
d) circuitry
The answer is c:
Current
Which of the following is considered a good conductor?
a) rubber
b) cement
c) silk
d) tap water
The answer is d:
Tap water
You should disconnect an appliance by ______.
a) pulling on the cord
b) stepping on the cord
c) pulling on the plug
d) twisting the plug
The answer is c:
Pulling on the plug
You should not touch _______ while using an electrical appliance.
a) rubber
b) metal
c) glass
d) plastic
The answer is b:
Metal
_______ is the process that introduces water-soluble products into the skin.
a) Iontophoresis
b) Desincrustation
c) Catabolism
d) Anaerobics
The answer is a:
Iontophoresis
Which light rays are blocked by the ozone layer?
a) visible light
b) UVB rays
c) UVC rays
d) infared light
The answer is c:
UVC rays
Within the visible spectrum of light, _______ has the shortest wavelength and _______ has the longest.
a) yellow; red
b) violet; red
c) yellow; green
d) violet; indigo
The answer is b:
Violet; red
What light is known as cold light or actinic light?
a) electromagnetic
b) visible
c) infared
d) ultraviolet
The answer is d:
Ultraviolet
Direct current is produced by _______ means.
a) physical
b) chemical
c) mechanical
d) photovoltaic
The answer is b:
Chemical
An appliance rated at 12 amps must have a cord that is ______ as thick as one rated at 6 amps; otherwise the cord might overheat and start a fire.
a) half
b) just
c) twice
d) four times
The answer is c:
Twice
The electricity in your house is measured in _____ per hour.
a) kilowatts
b) megawatts
c) kilovolts
d) milliamps
The answer is a:
Kilowatts
A(n) ________ is designed to detect currents of few milliamperes trip a breaker at the receptacle or at the breaker panel to remove shock hazard.
a) UL
b) GFI
c) MRI
d) UVB
The answer is b:
GFI
Which of these is not a modality used in beauty and wellness services?
a) Tesla high-frequency current
b) microcurrent
c) integrated current
d) galvanic
The answer is c:
Integrated current
Anaphoresis ________.
a) softens tissues
b) closes the pores
c) contracts blood vessels
d) produces acidic reactions
The answer is a:
Softens tissues
Remove lint from clothes dryers before each load to _______.
a) save electricity
b) reduce the chance of fire
c) avoid mildew
d) better dry clothes
The answer is b:
Reduce the chance of fire
When should you seek medical care after an electrical shock?
a) if you were touching metal with your other hand
b) if your appliance’s cords are frayed or tangled
c) if a client witnessed the shock
d) if you are pregnant
The answer is d:
If you are pregnant
