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Ch. 13 Electricity
Ch. 13 Electricity Study Guide
Question | Answer |
---|---|
The path of an electric current from the generating source back to the original source is an (n). | complete ciruit |
Infrared lamps used during hair treatments and process hair color should be operated at distance of at least. | 30 inches |
Thermal or heat-producing current with a high rate of oscillation or vibration is: | tesla current |
The most commonly used modality is: | galvanic current |
A glass or metal appliance connection that supplies current to the circuit is the: | electrode |
The electrical appliance connection that supplies current to the circuit is the: | live connection |
The current for facial and scalp treatments is measured in: | milliamperes |
The positive electrode is called the: | anode |
A measurement of how much electricity is being used in 1 second is a(n). | watt |
A converter is an apparatus that changes direct current to: | alternating current |
Electricity does not occupy space or have physical or chemical properties; it is, however, a form of: | energy |
The term used a measure the strength of an electric current is: | amp |
Electronic facial treatments are commonly referred to as: | electrotherapy |
A combination light of all the visible rays of the spectrum is referred to as: | white light |
The distance between two successive peaks is called the: | wavelength |
Cataphoresis forces acidic substances into deeper tissues using galvanic current from the: | positive toward the negative pole |
A metal substance that is particularly good conductor of electricity is: | copper |
Rays with long wavelengths that penetrate the deepest and produce more heat than visible light are: | infrared rays |
Introducing water-soluble products into skin with the use of electric current is a process known as: | iontophoresis |
Careless electrical connection and overloaded circuits can result in an electric shock, burn or: | fire |
The special device that prevents excessive current from passing through a circuit and overloading the circuit is a(n): | fuse |
The process frequently used to treat acne and milia and soften and emulsify deposits in the hair follicles is: | desincrustation |
The even-flowing electric current that travels in one direction only is: | direct current |
Rapid and interrupted current that flows in one direction and then in the opposite direction is: | alternating current |
The indication of the negative or positive pole of an electric is referred to as the: | polarity |
Rubber, silk, wood and glass are common examples of: | insulators |
Rays with short wavelengths that are the least penetrating, produce chemical effects, and kill germs are: | ultraviolet rays |
Cordless electric clippers and battery chargers convert AC current from a wall unit to DC current needed to recharge DC batteries with the use of: | a rectifiter |
The unit that measures the pressure or force that pushes the flow of electrons forward through a conductor is a(n): | volt |
Current that should not be used on clients who are pregnant, have blood pressure, or have a pacemaker is: | tesla high frequency |