Electricity Flashcards
Light, heat, chemical and magnetic changes are all produced by ________________.
electricity
Material that best transports electricity is a(n) ____________.
conductor
Since silver and copper transmit electricity, they are called ______________.
conductors
Materials that do not allow electricity to pass through them are called __________________.
insulators
Material such as glass, rubber, or paper around a conductor that does not allow current to pass through it is called a(n) ___________________.
insulator
Alcohol is an insulator. (True or False)
True
An ampere is a unit of electric _____________.
strength
How many milliamperes equal one ampere?
1,000
A volt is a unit of electric ___________.
pressure
A unit of electrical resistance is called a(n) _________.
ohm
A measure of how much electricity is being used is a(n) _____________
watt
A constant electrical current flowing in one direction is called a(n) ______________.
direct current (DC)
A ___________ breaks the flow of current when an overload occurs.
fuse
When a person comes into contact with an electric current, touch the person to ground the circuit. (True or False)
False
The application of special currents or modalities to the skin is called _________________.
electrotherapy
When performing electrotherapy, the _________ or current conductor is used to bring the current from the appliance to the client’s skin.
electrode
The direct current used in electrotherapy treatments is ________________.
Galvanic
The electrode that is negatively charged during an electrotherapy treatment is the ____________.
cathode
__________________ is an electrotherapy treatment used to break down sebum, liquefy blackheads, and deep clean pores.
Desincrustation
Do not use Galvanic current over an area having broken capillaries. (True or False)
True
Faradic current is used primarily to cause ________________.
muscle contractions
Tesla, a high frequency current, is known as the ________________.
violet ray
High frequency and alternating current are characteristics of which type of electrotherapy?
Tesla
An alternating current that can be adjusted to different voltages to produce heat is ________________.
high frequency
If the client is holding the active electrode while the cosmetologist manually stimulates the area being treated, what method of Tesla current is being used?
Indirect application
Treatment with light rays is called _______________.
light therapy
________________ rays have the longest wavelength.
Infrared
Which type of light can be broken into its individual wavelengths by a prism?
Combination
Which type of light most closely mimics natural sunlight?
Incandescent
Pure heat rays are produced by _____________.
infrared rays
__________________ light during a facial increases circulation.
Infrared
The average distance an infrared lamp should be placed during a facial is about ________________.
30 inches
Which rays are also known as actinic rays?
Ultraviolet
Small doses of UV light may help the body to produce _________________.
Vitamin D
Bacteria that cause skin infections can be killed by ___________________.
ultraviolet light
