Chapter 13 Electricity Flashcards
The flow of electricity along a conductor is called a(n)?
Electric current
Electric wires are usually covered with a rubber substance that is a(n)?
Insulator
What is the device called that changes direct current to alternating current?
A converter
What is the term that refers to a rapid and interrupted current that flows in one direction then in the opposite direction?
Alternating current
What is the unit that measures the pressure or force that pushes the flow of electrons through a conductor?
Volt.
Which unit measures the resistance of an electric current?
Ohm
What is the device that prevents excessive current from passing through a circuit called?
A fuse
A switch that automatically interrupts or shut off an electric current that the first indication of an overload is called a what?
Circuit breaker
The negative electrode of an electro therapy device is called what?
A cathode
A process that forces an alkaline product into the tissues from the negative toward the positive pole is called…
Anaphoresis
Grounding completes the what and then carries the current safely away.
Electric circuit
All the electric appliances you use should be what?
UL certified
What kind of current is used when the active electrode is the electrode used on the area to be treated?
Galvanic current
Microcurrent can be used to restore elasticity and do what?
Prevent acidic reactions
Only licensed professionals can use what?
Light therapy equipment.
A wavelength is the distance between successive peaks of what kind of waves?
Electromagnetic.
In visible light is the light at either end of the what that is invisible to the naked eye.
Visible spectrum of light
True or false:
UVC light is blocked by the O-Zone layer.
True!
Catalysts are substances that speed up what?
Chemical reactions
All lasers work by a process known as selective what?
Photothermolysis
Constant direct current having a positive and negative pole, that produces a chemical change when it passes through the tissues and fluids of the body is known as what kind of current?
Galvanic current
And extremely low level of electricity that mirrors the bodies natural electrical impulses is what?
Microcurrent
A medical device that uses multiple colors and wavelengths of light do you treat such conditions as excessive hair and spider veins is what?
Intense pulse light
The thermal or heat producing current with a high rate of isolation or vibration commonly used for scalp and facial treatments is called what?
Tesla high frequency current
A device that works by releasing light onto the skin to stimulate specific responses at precise depth of the skin tissue is called what?
Light emitting diode
