An insulator or__________ is a substance that does not easily transmit electricity.

What electrical term is abbreviated as AC?

What apparatus changes alternating current ( AC) to direct current (DC)?

The term used for measuring the strength of an electric current is

What unit of measure is equivalent to 1/1000 of an ampere?

The term used for measuring the resistance of an electric current is:

The term used for measuring how much electric energy is being used in one second is:

Which safety devices prevent the overheating of electric wires?

Which apparatus conducts electric current from an electrotherapy device to the client's skin?

A positive electrode is called a(n)

Commonly used modalities in beauty and wellness are Tesla high-frequency current, micro current, and _________ current.

The process of introducing water-soluble products into the skin with the use of electric current is known as:

The current used in facial and scalp treatments is measured in

All electrical appliances used in the salon, spa, or barbershop should be___________ certified

An extremely low level of electricity that mirrors the body's natural electrical impulses is:

Treatment by means of light rays is called light

The different types of currents used in facial and scalp treatments are called

The distance between two successive peaks of electromagnetic waves is called

Thirty-five percent of natural sunlight is made up of:

Ultraviolet rays, also known as cold light, make up_______percent of natural light.

The type of light blocked by the ozone layer is

UVB is often called the burning light because it is most associated with

__________ are substances that speed up chemical reactions

A GFI protects from electrical shock by _________ a circuit when there is a leak.

If you drop an electrical appliance in water, you should ______