Electrical Measurements
Unit that measures the pressure or force that pushes electric current.
What is a Volt?
A ___ prevents excessive current from passing through a circuit by melting when the wire becomes too hot from overloading.
Fuse
A ___ is a machine or electrical method used to create a specific effect on the skin.
Modality
Which color of LED light therapy is used to kill acne bacteria?
Blue light kills acne bacteria.
Unit that measures the strength of an electric current.
What is an Ampere (amp)?
A ___ is a switch that automatically interrupts or shuts off an electric circuit at the first indication of an overload.
Circuit Breaker
___ is the use of electrical currents to treat the skin?
Electrotherapy
Which color is used to stimulate collagen and reduce wrinkles?
Red light stimulates collagen.
Unit measuring how much electric energy is being used per second.
What is a Watt (W)?
___ completes an electric circuit and carries the current safely away.
Grounding
___ is a constant and direct current with a positive and negative pole that produces chemical changes in tissues.
Galvanic Current
Which invisible light ray causes sunburns?
Ultraviolet (UV) causes sunburns.
Measures the resistance of electric current.
What is an Ohm?
A ___ protects from electrical shock by interrupting a circuit when there is a leak in the circuit.
Ground Fault Interrupter (GFI)
___ is a thermal or heat producing current with a high rate of oscillation or vibration.
Tesla High-Frequency Current (also known as violet ray)
Which one is used to deeply relax muscles?
Infrared relaxes muscles.
What is the name of the smaller unit used to measure the electric current applied to a client's face, and how many of them equal one whole Amp?
Milliampere (mA). There are 1,000 of them in one Amp.
What is the term for materials like plastic that stop electricity, and why can a tightly wrapped plastic cord still shock you?
Insulator. Tightly wrapping the cord causes the plastic to crack over time, exposing the live copper wires inside.
Which specific electrode creates an acidic reaction on the skin, and why will it cause a metallic taste in the client's mouth?
The Anode (Positive). The metallic taste happens because the current interacts with the iron and saliva in the mouth, separating the ions.
Blue LED light kills acne bacteria, but why doesn't it work on deep, painful cystic acne?
Because blue light has a very short wavelength.