Basics of Electricity Flashcards
The movement particles around an atom that creates pure energy is known as:
Electricity.
The flow of electricity along a conductor in a complete circuit is called:
An electric current.
A ________ is any material that easily conducts electricity.
Conductor.
Rubber, silk, wood and cement are good examples of ________: Also known as nonconductors.
Insulators.
The path of negative and positive electric currents moving from the generating source through the conductors and back to the generating original source or to the ground is known as:
A complete electric circuit.
A _______ ________ is a constant, even-flowing current that travels in one direction only.
Direct current.
An apparatus that changes direct current to alternating current is called:
A converter.
A rapid and interrupted current, flowing first in one direction and then in the opposite direction is known as:
Alternating current.
A _______ is an apparatus that changes alternating current into direct current.
Rectifier.
The unit that measures the pressure or force that pushes the flow of electrons forward through a conductor is called a ______.
Volt.
An amp or ______ is the unit that measures the amount of an electric current.
Ampere.
A ___________ is one-thousandth of an ampere.
Milliampere.
A unit that measures the resistance of an electric current.
Ohm.
A watt measures:
How much energy is being used in 1 second.
A kilowatt is ______ watts.
1,000.
What is the purpose of a fuse?
It prevents excessive current from passing through a circuit.
A switch that automatically interrupts or shuts off an electric circuit at the first indication of an overload:
A circuit breaker.
The _______ connection completes the circuit and carries the current safely away to the ground.
Ground.
________ indicates the negative or positive pole of an electric current.
Polarity.
Iontophoresis is the process of:
Introducing water-soluble products into the skin with the use of electric current.
Cataphoresis is the process of:
Infuses a positive (acid) product into the skin.
Anaphoresis is the process of infusing:
Alkaline products into the skin.
A process used to soften and emulsify grease deposits (oil) and blackheads in the hair follicles.
Desincrustation.
_________ is the application of light rays to the skin for the treatment of acne, wrinkles,
Phototherapy.
A _________ is the distance between the peaks of two successive waves of electromagnetic radiation.
Wavelength.
Shorter wavelengths have a higher ______ than a longer wavelength.
Frequency.
Visible light makes up _____ percent of natural sunlight.
35.
Gamma rays have the _______ wavelengths.
Shortest.
Radio rays/waves have the ______ wavelengths.
Longest.
____ rays also called actinic rays make up __ percent of natural sunlight.
UV, 65%.
UVB rays are also called _________ rays.
Burning.
What percentage of cancer cases are caused by overexposure to UV radiation?
90%.
UV light contains few heat rays, is the least penetrating and has ______ and chemical benefits.
Germicidal.
Light Amplification Stimulation Emission of Radiation is long for:
Laser.
Which device uses multiple colors of focused light to treat spider veins and brown spots?
Intense pulse light.
LED is the acronym for:
Light Emitting Diode.
UVA penetrates directly into the dermis of the skin and is known as the _____ ray.
Aging.
What does yellow light do for the skin?
Aids in reducing inflammation and swelling.
