Electricity Flashcards 4.1

Questions and Answers

What is the term for electrons that flow first in one direction and then in the other?

Electrical Current

Direct Current (DC)

Alternating Current (AC) (correct)

Voltage

What term describes the energy that produces light, heat, magnetic, and chemical changes?

electricity

What indicates the voltage needed, frequency required, and watts the appliance consumes?

nameplate

What is the movement of electricity along a path called?

electrical current Signup and view all the answers

What is the technical name for any electrically powered appliance?

load Signup and view all the answers

What is the material that allows electricity to flow through it easily?

conductor Signup and view all the answers

What is the unit of electrical strength?

amp Signup and view all the answers

What is the unit of electrical pressure?

volt Signup and view all the answers

What is the unit of electrical resistance?

ohm Signup and view all the answers

What is the measurement of how much electrical energy is being used?

watt Signup and view all the answers

What refers to the application of electrical currents during treatments to the skin?

electrotherapy Signup and view all the answers

What is the term for a material that does not allow the flow of electric current?

insulator Signup and view all the answers

What are tiny, negatively charged particles called?

electron Signup and view all the answers

What is the term for electrons that move at an even rate and flow in only one direction?

direct current (DC) Signup and view all the answers

What does it mean when more current flows than the line is designed to carry?

overload Signup and view all the answers

What breaks the flow of current when an overload occurs?

circuit breaker Signup and view all the answers

What kind of equipment has a motor?

mechanical equipment Signup and view all the answers

What kind of equipment is used to generate heat?

thermal equipment Signup and view all the answers

What generates heat and produces a flow of air?

combination equipment Signup and view all the answers

What kind of shock passes through a small part of the body, causing burns and muscle contractions?

local shock Signup and view all the answers

What kind of shock passes through the nervous system?

general shock Signup and view all the answers

Which device breaks the flow of current when an overload occurs?

circuit breaker Signup and view all the answers

Using electric clippers in cosmetology work is an example of which kind of electrical effect?

mechanical Signup and view all the answers

What produces light, heat, magnetic, and chemical changes?

electricity Signup and view all the answers

Most of the electricity you use daily consists of a flow of what type of particles?

electrons Signup and view all the answers

Electric currents move along a path called a(n):

conductor Signup and view all the answers

How many milliamperes are equal to one ampere?

1000 Signup and view all the answers

What are two common sources of electric current?

generators and batteries Signup and view all the answers

The appliance has been certified to operate safely under the conditions specified. What is the relevant certification?

Underwriters Laboratory (UL) Signup and view all the answers

What should cords on appliances be kept straight and free of to prevent?

breaks Signup and view all the answers

What protects people from getting shocked by electric current?

insulators Signup and view all the answers

What is the measure of how hard the electrons are being forced or pushed by a source?

voltage Signup and view all the answers

The resistance to the motion of electrons through a conductor is known as what?

Ohm's rating Signup and view all the answers

A shock that passes through the nervous system is referred to as a:

general shock Signup and view all the answers

A shock that passes through a small part of the body, causing burns and muscle contractions is called a:

local shock Signup and view all the answers

If someone comes in contact with an electric current, how can you break the circuit carrying the power?

turning off the fuse box or circuit breaker Signup and view all the answers

What device changes alternating current to direct current?

rectifier Signup and view all the answers

Study Notes

Electrical Concepts

Alternating Current (AC): Electrons flow first in one direction and then in the other.
Electricity: Energy capable of producing light, heat, magnetic, and chemical changes.

Electrical Terminology

Nameplate: Indicates voltage needed, required frequency, and watts consumed by an appliance.
Electrical Current: Movement of electricity along a path known as a conductor.
Load: Technical term for any electrically powered appliance.
Conductor: Material that easily allows electricity to flow through it.

Electrical Units

Amp: Unit of electrical strength.
Volt: Unit of electrical pressure.
Ohm: Unit of electrical resistance.
Watt: Measurement of electrical energy consumption.

Electrical Equipment

Electrotherapy: Application of electrical currents during skin treatments.
Insulator: Material that prevents the flow of electric current.
Mechanical Equipment: Equipment that has a motor.
Thermal Equipment: Used to generate heat.
Combination Equipment: Generates heat and produces a flow of air.

Electrical Safety

Local Shock: Shock passing through a small body area, possibly causing burns and muscle contractions.
General Shock: Shock that passes through the nervous system.
Circuit Breaker: Device that interrupts current flow during an overload.
Overload: Condition where more current flows than what the line is designed to carry.
Insulators: Protect individuals from electric shocks.

Electrical Current Sources

Generators and Batteries: Two common sources of electric current.

Electrical Cords and Maintenance

Appliance Cords: Should remain straight and free of knots, kinks, and tangles to prevent breaks.

Additional Electrical Facts

Milliamperes: 1 ampere equals 1000 milliamperes.
Rectifier: Device that converts alternating current to direct current.
Underwriters Laboratory (UL): Certified appliance safety under specified conditions.
Voltage: Measures how hard electrons are pushed by a source.
Ohm's Rating: Resistance against the motion of electrons through a conductor.

Emergency Response

To break the circuit of an electric current, turn off the fuse box or circuit breaker.

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Description

Test your knowledge of key electricity concepts with these flashcards. Each card covers essential terms and definitions related to electricity, from alternating current to essential appliance specifications. Perfect for students looking to strengthen their understanding of electrical principles.