Basic Of Electricity chapter 11

energy

Electricity is described as a form of:

electric current

The flow of electricity along a conductor is called a(n)

conductors

Metals used in electric wiring and motors are materials that are considered good electricity:

nonconductor

Electric wires are usually covered with a rubber substance that is used as an insulator or:

complete circuit

The path of electricity from the generating source through conductors and back to the original source is called a(n)

direct current

Electric current that is constant, even-flowing and travels in one direction is:

converter

The device that changes direct current to alternating current is a(n)

alternating current

A rapid and interrupted current that flows in one direction then in the opposite direction is :

volt

The unit that measures the pressure or force that pushes the flow of electrons through a conductor is a (n)

ampere

The unit that measures the amount of electric current is a(n)

milliamperes

The current that is used for facial and scalp treatments is measured in :

watt

The unit that measures how much electric energy is being used in one second is a (n)

fuse

The device that prevents excessive current from passing through a circuit is a (n)

circuit breaker

A switch that automatically interrupts or shuts off an electric current at the first indication of an overload is a (n)

grounding

An important way of promoting electrical safety is the principle of:

electrode

An applicator that is used for directing the electric current from the machine to the clients skin is called a (n)

anode

The positive electrode of an electrotherapy device is called a (n):

cathode

The negative electrode of an electrotherapy device is called a (n)

galvanic current

The most commonly used modality that is a constant and direct current is:

iontophoresis

The process of forcing water-soluble products into the skin with the use of electric current is called :

anaphoresis

A process that forces liquids into the tissuse from the negative toward the positive pole is called:

Tesla current

A thermal or heat-producing current with a high rate of oscillation that is used for scalp and facial treatments is :

35 percent

Visible light, the part of the electromagnetic radiation spectrum that we can see, makes up what percentage of natural sunlight ?

infrared rays

The long wavelenghts that penetrate the deepest and produce the most heat are:

safety goggles

To avoid damage to the eyes of a client or practitioner when using light therapy treatments, the eyes should be protected with saturated cotton pads or:

Cataphoresis

forces acidic substances into deeper tissue using galvanic current from the positive toward the negative pole

Most commonly used modality is

galvanic current

polarity

indicates the negative or positive pole of an electric current

Desincrustation

is process used to soften and emulsify grease deposits (oil) and blackheads in the hair follicles.

violet ray

Tesla high-frequency current It is commonly called

Tesla high- frequency current

is a thermal or heat - producing current with a high rate of oscillation or vibration

steamer or vaporizer

produces moist, uniform heat that can be appiled to the head or face

wavelength

The distance between two successive peaks is called the

Ultraviolet (UV) rays

makes up 5% of natural sunlight

cold rays or actinic rays

ultraviolet (UV) rays are also referred to as

30 to 36 inches

Uv rays are applied with a lamp at a distance of

True

Tesla high frequency current should not be used on clients who pregnant, suffer from epilepsy or asthma, high blood pressure, sinus blockage, pacemaker or metal implants

measures strength of electric current

amp

AC

meaning Alternating Current

Fuse and circuit breaker

prevents current from overload or excessive overload of circuit

ohm

is a unit that measures the resistance of an electric current

watt

is a measurement of how much electric energy is being used in one second