Ch 13: Basics of Electricity Flashcards
The movement of electrons from one atom to another along a conductor is called _____.
electricity
Electric wires can be covered with a material that does not transmit electricity such as a rubber or plastic coating. This material is known as _____.
an insulator
An apparatus that changes direct current to alternating current is _____.
an inverter
The term _____ refers to a rapid and interrupted current, flowing first in one direction and then in the opposite direction.
alternating current
The unit that measures the pressure or force that pushes the electric current forward through a conductor is _____.
a volt
Which unit measures of the resistance of an electric current?
Ohm
The device that prevents excessive current from passing through a circuit is called _____.
a fuse
A switch that automatically interrupts or shuts off an electric current at the first indication of an overload is _____.
a circuit breaker
The negative electrode of an electrotherapy device is called _____.
a cathode
A process that infuses an alkaline product into the tissues from the negative pole toward the positive pole is called _____.
an anaphoresis
Grounding completes _____ and carries the current safely away.
an electric circuit
All the electrical appliances you use should _____.
be UL certified
When using _____, the active electrode is the electrode used on the area to be treated.
galvanic current
Microcurrent can be used to _____ and restore elasticity.
increase muscle tone
Only licensed professionals should use _____.
light therapy equipment
Play wave length is the distance between successive peaks of _____ waves.
electromagnetic
Invisible light is the lights at either end of the _____ that is invisible to the naked eye.
visible spectrum of light
Ultraviolet C (UVC) light _____.
is blocked by the ozone layer
Catalysts are substances that speed up _____.
chemical reactions
All lasers work by a process known as selective _____.
photothermolysis
Constant and direct current, having a positive and negative pole, which produces chemical changes when it passes through the tissues and fluids of the body is known as _____ current.
a galvanic
An extremely low level of electricity that mirrors the body’s natural electrical impulses is _____.
a microcurrent
A medical device that uses multiple colors and wavelengths of focused light to treat conditions such as excessive hair and spider veins is _____.
an intense pulse light
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 _____.
a Tesla high-frequency current
