Electricity Milady Cosmetology Chapter 13 Exam Questions with Verified Answers ( 100% Pass)
Electricity - Answers The movement of particles around an atom that creates pure energy.
Define: Electric Current - Answers The flow of electricity along a conductor.
Conductor - Answers Any material that conducts electricity. Meaning that electricity will pass threw the
material easily.
*Most metal are good conductors
*Copper is a good conductor
Nonconductor - Answers Is a material does not transmit electricity. Meaning does not allow electricity to
flow threw it.
*Also referred to as an Insulator
Complete Electric Circuit - Answers The path of negative and positive electric currents moving from the
generating source through the conductors and back to the generating source.
How fast does lightning travel? - Answers Lightning can travel up to speeds of 60,000 miles per hour
threw the air.
What are the two types of electric currents? - Answers 1)Direct Current (DC)
2)Alternating Current (AC)
Direct Current - Answers Is a constant even-flowing current that travels in one direction only and is
produced by chemical means.
*Flashlights, cell phones, telephones, cordless hairstyling tools.
Alternating Current - Answers Is a rapid and interrupted current, flowing first in one direction then I the
opposite direction, it is produced by mechanical means and changes direction 60 times per seconds.
*Corded hair dryers, Curling irons, Table lamps
Converter - Answers Is an apparatus that changes the direct current to alternating current.
Rectifier - Answers Is an apparatus that changes the alternating current to direct current.
How fast is electricity? - Answers Electricity is very fast: 186,000 miles per second. If you were to travel
that fast, you could go around the world eight times in the time it takes you to turn a light on.
Name some differences between direct and alternating current. - Answers Direct Current:
*Constant, even-flowing, Travels in one direction, and produced by chemical means.
, Alternating Current:
*Rapid and interrupted flow, Travels in two directions, and produced by mechanical means.
Volt - Answers Is the unit that measures the pressure of force that pushes electric current forward
through a conductor.
*Also known as V or Voltage
Ampere - Answers The measurement of the strength of a electric current.
*Also known as Amp
Milliampere - Answers It 1/1,000 of a ampere. This is used towards facial and scalp treatments because
the ampere is to strong.
*Also known as mA
Omh - Answers The measurement of the resistance of an electric current.
*Also known as O
Watt - Answers The measurement of how much electricity is being used that second.
Kilowatt - Answers Is 1,000 watts. In your house it is measured how many kilowatts per hour(kwh).
*Also known as K
Fuse - Answers Prevents excessive current from passing through a circuit.
Circuit Breaker - Answers A switch that automatically interrupts or shuts off an electrical current at the
first indication of an overload.
Grounding - Answers Completes an electrical circuit and carries the current safely away.
What company tests all the electrical appliances? - Answers Underwriters Laboratories (UL) certifies the
safety of electrical appliances. This certifies that they are safe when used according to manufactures
direction.
What is it called when electricity is use for skin treatments? - Answers Electrotherapy is when electric
currents are used to treat the skin.
Modalities - Answers Currents used in facials and scalp treats. Each modality has a different effect on the
skin.
*The main ones used are galvanic current, microcurrent, and the Tesla high-frequency current.
Electrode - Answers Is an applicator for directing electric current from an electrotherapy device to the
clients skin.
Electricity - Answers The movement of particles around an atom that creates pure energy.
Define: Electric Current - Answers The flow of electricity along a conductor.
Conductor - Answers Any material that conducts electricity. Meaning that electricity will pass threw the
material easily.
*Most metal are good conductors
*Copper is a good conductor
Nonconductor - Answers Is a material does not transmit electricity. Meaning does not allow electricity to
flow threw it.
*Also referred to as an Insulator
Complete Electric Circuit - Answers The path of negative and positive electric currents moving from the
generating source through the conductors and back to the generating source.
How fast does lightning travel? - Answers Lightning can travel up to speeds of 60,000 miles per hour
threw the air.
What are the two types of electric currents? - Answers 1)Direct Current (DC)
2)Alternating Current (AC)
Direct Current - Answers Is a constant even-flowing current that travels in one direction only and is
produced by chemical means.
*Flashlights, cell phones, telephones, cordless hairstyling tools.
Alternating Current - Answers Is a rapid and interrupted current, flowing first in one direction then I the
opposite direction, it is produced by mechanical means and changes direction 60 times per seconds.
*Corded hair dryers, Curling irons, Table lamps
Converter - Answers Is an apparatus that changes the direct current to alternating current.
Rectifier - Answers Is an apparatus that changes the alternating current to direct current.
How fast is electricity? - Answers Electricity is very fast: 186,000 miles per second. If you were to travel
that fast, you could go around the world eight times in the time it takes you to turn a light on.
Name some differences between direct and alternating current. - Answers Direct Current:
*Constant, even-flowing, Travels in one direction, and produced by chemical means.
, Alternating Current:
*Rapid and interrupted flow, Travels in two directions, and produced by mechanical means.
Volt - Answers Is the unit that measures the pressure of force that pushes electric current forward
through a conductor.
*Also known as V or Voltage
Ampere - Answers The measurement of the strength of a electric current.
*Also known as Amp
Milliampere - Answers It 1/1,000 of a ampere. This is used towards facial and scalp treatments because
the ampere is to strong.
*Also known as mA
Omh - Answers The measurement of the resistance of an electric current.
*Also known as O
Watt - Answers The measurement of how much electricity is being used that second.
Kilowatt - Answers Is 1,000 watts. In your house it is measured how many kilowatts per hour(kwh).
*Also known as K
Fuse - Answers Prevents excessive current from passing through a circuit.
Circuit Breaker - Answers A switch that automatically interrupts or shuts off an electrical current at the
first indication of an overload.
Grounding - Answers Completes an electrical circuit and carries the current safely away.
What company tests all the electrical appliances? - Answers Underwriters Laboratories (UL) certifies the
safety of electrical appliances. This certifies that they are safe when used according to manufactures
direction.
What is it called when electricity is use for skin treatments? - Answers Electrotherapy is when electric
currents are used to treat the skin.
Modalities - Answers Currents used in facials and scalp treats. Each modality has a different effect on the
skin.
*The main ones used are galvanic current, microcurrent, and the Tesla high-frequency current.
Electrode - Answers Is an applicator for directing electric current from an electrotherapy device to the
clients skin.
