Row 1
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
a) insulator
The term ______ current refers to a rapid and interrupted current, flowing first in one direction and then in the opposite direction.
a) recitified
b) alternating
c) active
d) direct
b) alternating
Which unit measures the resistance of an electrical current?
a) ohm
b) watt
c) amp
d) volt
a) ohm
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
a) is often used in tanning beds
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
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 and then try again later
For safety, use no more than ______ plug(s) in each outlet.
a) one
b) two
c) three
d) four
a) one
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
c) pulling on the plug
You should not touch _____ when using an electrical appliance.
a) rubber
b) metal
c) glass
d) plastic
b) metal
The electricity in your house is measured in _____ per hour.
a) kilowatts
b) megawatts
c) kilovolts
d) miliamps
a) kilowatts
Anaphoresis _______.
a) softens tissues
b) closes the pores
c) contracts blood vessels
d) produces acidic reactions
a) softens tissues
When should you seek medical care after an electrical shock?
a) if you were touching metal with your other hand
b) if your appliances cords are frayed or tangled
c) if a client witnessed the shock
d) if you are pregnant
d) if you are pregnant
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
Which light rays are blocked by the ozone layer?
a) visible light
b) UVB rays
c) UVC rays
d) infrared light
c) UVC rays
Direct current is produced by ______ means.
a) physical
b) chemical
c) mechanical
d) photovoltaic
b) chemical
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 current
c) integrated current
Microcurrent can be used to _______ and restore elasticity.
a) decrease metabolism
b) increase muscle tone
c) reduce lymph
d) prevent acidic reactions
b) increase muscle tone
An apparatus that changes direct current to alternating current is a(n)
a) recitifier
b) circuit breaker
c) inverter
d) fuse box
c) inverter
The movement of electrons from one atom to another along a conductor is called _______.
a) an electric change
b) electricity
c) energy flow
d) sparks
b) electricity
Invisible light is the light at either end of the _______ that is invisible to the maked eye.
a) electromagnetic spectrum
b) spectrum of radiance
c) radiation spectrum
d) visible spectrum of light
d) visible spectrum of light
The negative electrode of an electrotherapy device is called a(n) ________.
a) anode
b) electron
c) carbide
d) cathode
d) cathode
All 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
b) be UL certified
Catalysts are substances that speed up ______ reactions.
a) chemical
b) acidic
c) alkaline
d) photoxic
The device that prevents excessive current from passing through a circuit is called a(n) _______.
a) fuse
b) battery
c) kilowatt
d) ampere
a) fuse
Electric _____ refers to the flow of electricity along a conductor.
a) resistance
b) insulation
c) current
d) circuitry
c) current