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
