Multiple Choice (ChF7)
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41 Terms
Which of this is the movement of electrons from one atom to another along a conductor?
Electricity
Electricity is a form of what?
Energy
When in motion, electricity has three effects: thermal, magnetic, and?
chemical
What is an Electric Current?
The flow of electricity along a conductor
How many types of Electric Current are there?
2
What is a Conductor?
Any material that conducts electricity
What does a conductor mean?
Electricity will pass through the material easily
What is an example of a good conductor?
Copper
What is the definition nonconductor?
A material that does not transmit electricity
What is a nonconductor also called?
Insulator
Which of the following materials are example of good insulators?
Rubber
Certain liquids can be insulators too, such as alcohol, oil, and
distilled water
What is a Complete Electric Circuit?
The path of negative and positive electric currents moving from the generating source through the conductors and back to the generating source
When you plug in your facial machine, turn it on and use it, you have an example of a?
Closed circuit
What are the two types of Electric Current?
Direct current and Alternating current
What is a Direct current?
Constant, even-flowing current that travels in one direction only and is produced by chemical means
What are some examples of things that uses direct current?
Flashlights and cell phones
What is an Inverter?
Apparatus that changes direct current to alternating current
What do Inverters usually have?
A plug and a cord
When electrons flow in one direction and then in the opposite direction is known as?
Alternating current
What are some things that uses alternating current?
Corded blowdriers, curling irons, electric files, and table lamps
What is an example of a device that uses alternating current (AC)?
Magnifying lamp
What is a Rectifier?
Apparatus that changes alternating current to direct current
What kind of electricity uses a rectifier?
Cordless electric clippers and phones chargers
What is the unit that measures the pressure or force that pushes electric current forward through a conductor?
Volt
What is Volt also called?
Voltage
How many volts are in Car batteries?
12 volts
How many volts are in normal electric wall that power your tools?
120 volts
How many volts are in most air conditioners and clothes dryers?
240 volts
A higher voltage indicates?
More power
What is the unit that measures the strength of an electric current.
Ampere
Ampere is also known as?
Amp
A higher amp rating indicates what?
A great number of electrons and a stronger current
What is the unit that also measures the amount of an electric current (the number of electrons flowing through a conductor)?
Ampere
What is an Milliampere?
1/1,000 of an ampere
What is the current used for facial and scalps treatments?
Milliampere
What is the unit that measures the resistance of an electric current?
Ohm
The unit that measures how much electric energy is being use in one second is what?
Watt
To create an atmosphere that is relaxing in the facial room, Many will use a 40-_____ bulb
watt
What is an Kilowattt?
1,000 watts
The electrify in your house is measured in what?
Kilowatts per hour