Nail Foundations Chapter 7 - Electricity & Electrical Safety

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

nonconductor

What electrical term is abbreviated as AC?

alternating current

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

rectifier

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

ampere

What unit of measure is equivalent to 1/1,000 of an ampere?

milliampere

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

ohm

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

watt

Which safety devices prevent the overheating of electric wires?

fuses and circuit breakers

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

electrode

A positive electrode is called a(n) _____.

anode

Commonly used modalities in beauty and wellness are Tesla high-frequency current, microcurrent, and _____ current.

galvanic

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

iontophoresis

The current used in facial and scalp treatments is measured in _____.

milliamperes

All electrical appliances used in the salon, spa, or barbershop should be _____ certified.

UL

An extremely low level of electricity that mirrors the body’s natural electricity impulses is known as _____.

microcurrent

Treatment by means of light rays is called light _____.

therapy

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

modalities

The distance between two successive peaks of electromagnetic waves is called _____.

wavelength

Thirty-five percent of natural sunlight is made up of _____.

visible light

Ultraviolet rays, also known as cold light, make up _____ percent of natural light.

5

The type of light blocked by the ozone layer is _____.

UVC

UVB is often called burning light because it is most associated with _____.

sunburns

_____ are substances that speed up chemical reactions.

catalysts

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

interrupting

If you drop an electrical appliance in water you should _____.

never use it again