Ch 13: Basics of Electricity

Question 1

The movement of electrons from one atom to another along a conductor is called _____.

Answer 1

electricity

Question 2

Electric wires can be covered with a material that does not transmit electricity such as a rubber or plastic coating. This material is known as _____.

Answer 2

an insulator

Question 3

An apparatus that changes direct current to alternating current is _____.

Answer 3

an inverter

Question 4

The term _____ refers to a rapid and interrupted current, flowing first in one direction and then in the opposite direction.

Answer 4

alternating current

Question 5

The unit that measures the pressure or force that pushes the electric current forward through a conductor is _____.

Answer 5

a volt

Question 6

Which unit measures of the resistance of an electric current?

Answer 6

Ohm

Question 7

The device that prevents excessive current from passing through a circuit is called _____.

Answer 7

a fuse

Question 8

A switch that automatically interrupts or shuts off an electric current at the first indication of an overload is _____.

Answer 8

a circuit breaker

Question 9

The negative electrode of an electrotherapy device is called _____.

Answer 9

a cathode

Question 10

A process that infuses an alkaline product into the tissues from the negative pole toward the positive pole is called _____.

Answer 10

an anaphoresis

Question 11

Grounding completes _____ and carries the current safely away.

Answer 11

an electric circuit

Question 12

All the electrical appliances you use should _____.

Answer 12

be UL certified

Question 13

When using _____, the active electrode is the electrode used on the area to be treated.

Answer 13

galvanic current

Question 14

Microcurrent can be used to _____ and restore elasticity.

Answer 14

increase muscle tone

Question 15

Only licensed professionals should use _____.

Answer 15

light therapy equipment

Question 16

Play wave length is the distance between successive peaks of _____ waves.

Answer 16

electromagnetic

Question 17

Invisible light is the lights at either end of the _____ that is invisible to the naked eye.

Answer 17

visible spectrum of light

Question 18

Ultraviolet C (UVC) light _____.

Answer 18

is blocked by the ozone layer

Question 19

Catalysts are substances that speed up _____.

Answer 19

chemical reactions

Question 20

All lasers work by a process known as selective _____.

Answer 20

photothermolysis

Question 21

Constant and direct current, having a positive and negative pole, which produces chemical changes when it passes through the tissues and fluids of the body is known as _____ current.

Answer 21

a galvanic

Question 22

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

Answer 22

a microcurrent

Question 23

A medical device that uses multiple colors and wavelengths of focused light to treat conditions such as excessive hair and spider veins is _____.

Answer 23

an intense pulse light

Question 24

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 _____.

Answer 24

a Tesla high-frequency current

Question 25

A device that works by releasing light onto the skin to stimulate specific responses at precise depths of the skin tissue is _____.

Answer 25

a light-emitting diode

Question 26

For safety, use no more than _____ plug in each outlet.

Answer 26

one

Question 27

When _____ is heated, it produces positive and negative ions that cancel the electric charges in the hair that cause static electricity.

Answer 27

tourmaline

Question 28

The application of UV light must be done with the utmost care in a proper manner by qualified professional because over exposure can lead to skin _____.

Answer 28

damage and skin cancer

Question 29

The use of _____ light reduces acne and bacteria on the skin.

Answer 29

blue

Question 30

The unit that measures how much electric energy is being used in one second is _____.

Answer 30

a watt