Basics of Electricity Conductors, Current, and Safety

Electricity Question Light, heat, chemical and magnetic changes are all produced by: a. force b. electricity c. conductors d. a short circuit Material that best transports electricity is a (n): a. watt b. prism c. insulator d. conductor Since silver and copper transmit electricity, they are called: a. electrons b. insulators c. conductors d. closed circuits Materials that do not allow electricity to flow through them are called: a. insulators b. conductors c. open circuits d. closed circuits Material such as glass, rubber or paper around a conductor that does not allow current to pass through it is called a (n): a. watt b. prism c. insulator d. conductor Which of the following materials does NOT allow a current to pass through it? a. metal b. water c. carbon d. alcohol An ampere is a unit of electric: a. strength b. pressure c. frequency d. resistance How many milliamperes equal one ampere? a. 10 b. 100 c. 1,000 d. 1,000,000 A volt is a unit of electric: a. strength b. pressure c. frequency d. resistance A unit of electrical resistance is called a (n): a. volt b. ohm c. watt d. insulator A measure of how much electric energy is being used is known as a: a. volt b. watt c. load d. conductor A constant electric current flowing in one direction is called a (n): a. direct current b. Faradic Current c. Sinusoidal Current d. alternating current Which of the following devices breaks the flow of current when an overload occurs? a. fuse b. insulator c. circuit breaker d. grounding wire What steps should NOT be followed to break the circuit when a person comes in contact with an electric current? a. unplug appliance b. turn off all circuit breakers c. touch the person to ground circuit d. knock the person out of circuit with an insulator The application of special currents (or modalities) that have a variety of effects on the skin is called: a. light therapy b. electrotherapy c. chemical therapy d. mechanical therapy When performing an electrotherapy procedure, what apparatus or current conductor is used to bring the current from the appliance to the client's skin? a. watt b. resistor c. electrode d. wall plate The direct current used in electrotherapy treatments is: a. Telsa b. Faradic c. Galvanic d. Sinusoidal The electrode that is negatively charged during an electrotherapy treatment is known as a (n): a. anode b. cathode c. insulator d. grounding wire What temporary effect will a negative electrode pole produce when applying Galvanic Current during an electrotherapy treatment? a. increase in blood flow b. expansion of nerve tissues c. contraction of blood vessels d. production of an acid reaction Which of the following is NOT a temporary effect of the positive pole of Galvanic Current? a. softens tissues b. soothes nerves c. produces an acidic reaction d. slows blood flow by contracting the vesels Which electrotherapy treatment can cause sebum to be broken down or blackheads to be liquified, as in deep-pore cleansing? a. Sinusoidal b. anaphoresis c. cataphoresis d. desincrustation Faradic Current is used chiefly to cause: a. soothing effects b. chemical effects c. the transfer of hat d. muscle contractions Tesla, a high frequency current, is known as the: a. red ray b. violet-ray c. infrared ray d. ultraviolet ray High frequency and alternating current are characteristics of which type of electrotherapy? a. Tesla b. Galvanic c. Sinusoidal d. direct current An alternating current that can be adjusted to different voltages to produce heat is: a. Faradic b. Galvanic c. Sinusoidal d. high frequency If the client is holding the active electrode while the cosmetologist manually stimulates the area being treated what method of Tesla Current is being used? a. direct application b. indirect application c. broad electrification d. general electrification Answer b. electricity d. conductor c. conductors a. insulators c. insulator d. alcohol a. strength c. 1,000 b. pressure b. ohm b. watt a. direct current c. circuit breaker c. touch the person to ground the circuit b. electrotherapy c. electrode c. Galvanic b. cathode a. increase in blood flow a. softens tissues d. desincrustation d. muscle contractions b. violet-ray a. Tesla d. high frequency b. indirect application What will produce mild, stimulating sensation while using high frequency current? a. wetting area to be treated b. wrapping electrode in three towels c. slightly separating electrode from skin d. keeping electrode in direct contact with area being tested Treatment with light rays is called: a. phoresis b. light therapy c. mechanical effect d. combination cataphoresis Which of the following has the longest wavelength? a. red rays b. violet rays c. infrared rays d. ultraviolet rays Which type of light can be broken into its individual wavelengths by a prism? a. infrared b. ultraviolet c. combination d. incandescebt A salon owner wants to minic natural sunlight as closely as possible in the salon reception area. Which type of light would most likely be used to accomplish this requirement? a. infrared b. ultraviolet c. fluorescent d. incandescent Pure heat rays are produced by: a. white light b. actinic rays c. infrared rays d. ultraviolet rays Which of the following is a benefit of using infrared light during a facial? a. kills bacteria b. produces Vitamin D c. increases circulation d. helps control dandruff Which of the following are also known as actinic rays? a. infrared b. red c. ultraviolet d. white Which of the following benefits is derived from UV light? a. it burns the skin b. it causes skin infections c. small doses tan the skin d. it photochemically damages hair Small doses of ultraviolet light may help the body produce: a. Vitamin A b. Vitamin B c. Vitamin C d. Vitamin D Bacteria that cause skin infections can be killed by: a. infrared light b. ultraviolet light c. fluorescent light d. incandescent light Before using ultraviolet light on a client, the skin or scalp should be: a. wet b. oily c. cleansed d. moisturized When using Galvanic current on clients in a salon what precaution must a cosmetologist take in order to prevent injury to the client A. do not wrap electrodes in moist cotton B. do not use an area having broken capillaries The average distance an ifrared lamp should be place during a facial is about A. 24' B. 10' C. 18' D.30' c. slightly separating the electrode from the skin b. light therapy c. infrared rays c. combination d. incandescent c. infrared rays c. increases circulation c. ultraviolet c. small doses tan the skin d. Vitamin D b. ultraviolet light c. cleansed do not use an area having broken capillaries 30'