electrical safety test Flashcards
The term __________ current refers to a rapid and interrupted current, flowing first in one direction and then in the opposite direction.
alternating
Which unit measures the resistance of an electric current?
ohm
An apparatus that changes direct current to alternating current is a(n) __________.
inverter
The negative electrode of an electrotherapy device is called a(n) __________.
cathode
A ___________ is an extremely low level of electricity that mirrors the body’s natural electrical impulses.
microcurrent
Invisible light is the light at either end of the __________ that is invisible to the naked eye.
v visible spectrum of light
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) ____________.
insulator
The movement of electrons from one atom to another along a conductor is called __________.
electricity
For safety, use no more than _________ plug(s) in each outlet
one
A wavelength is the distance between successive peaks of ___________ waves.
electromagnetic
The unit that measures how much electric energy is being used in one second is a(n) __________.
watt
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 __________ current.
Tesla high-frequency
Catalysts are substances that speed up _________ reactions
chemical
The unit that measures the pressure or force that pushes the electric current forward through a conductor is a(n) __________.
volt
Ultraviolet A (UVA) light __________
often used in tanning beds
All of the electrical appliances you use should __________.
be UL certified
Constant and direct current that has a positive and negative pole and produces chemical changes when it passes through the tissues and fluids of the body is known as __________ current.
galvanic
Grounding completes a(n) _________ and carries the current safely away.
electric circuit
Microcurrent can be used to ___________ and restore elasticity.
increase muscle tone
Which is considered a good conductor?
tap water
The application of UV light must be done with the utmost care in a proper manner by a qualified professional because overexposure can lead to skin __________.
damage and cancer
The device that prevents excessive current from passing through a circuit is called a(n) ___________.
fuse
A switch that automatically interrupts or shuts off an electric current at the first indication of an overload is a(n) _________.
circuit breaker
Electric ___________ refers to the flow of electricity along a conductor.
current
When using ___________ current, the active electrode is the electrode used on the area to be treated.
galvanic
