Ch 12. Electricity basics Flashcards
This current is rapid& interrupted. travels One way than the other direction, 60x/ seconds, & is produced _____. Example:
Alternating current, AC, mechanically, wall outlets.
This current is constant it is even flowing and travels in One Direction it is produced ___and an example is___
Direct current, Chemically, batteries
This measures the electricity in our house In k/ per ____.(time) 1 of these “(1k)” is 1000 ____. Meaning it uses 1000___ of electricity /second.
Kilowatt. Hour. watt. Watt.
Resettable electrical safety device that automatically shuts off and electric circuit at the first indication of overload. All appliances should be UL approved____
Circuit breaker
Underwriters lab
A closed loop that conducts electricity and provides a return path for the current
Complete electrical circuit
Are any substance that easily allows the flow of electricity with little resistance
Conductor
Any apparatus that changes direct current to alternating current
Inverter or converter
The flow of electricity In a complete electric circuit
Electric current
The movement of particles around an atom that creates pure energy. Or the movement of electrons from one atom to another along a conductor.
Electricity
A single use safety device designed to provide protection from an electrical overload or short circuit.It is a deliberately weak link in the circuit that’s designed to break and disconnect the current. To reestablish check all &re-insert a new fuse
Fuse
A substance that does not easily allow the flow of electricity
insulator
Also called an insulator
Nonconductor
Changes alternating current direct current. Like battery chargers
Rectifier
Provides double safety device that is designed to provide protection from an unsafe ground. Resettable found in rooms where water may be present they detect leakage and disconnect to prevent electrocution. They disconnect faster than a fuse or a circuit breaker.
Ground fault circuit interrupter
Completes an electrical circuit and carries the current safely away. All appliances have a live connection bringing current to the circuit and they have a ground connection that carries it safely away to the ground. Different prong sizes protected ensure the correct insertion. The third prong is an additional ground that insures in case the first ground faults. It is the most safe.
Electrical ground
This measures the resistance in an electric___. There is only flow if force(___) is stronger than resistance(___).
OHM, circuit, volt, Ohm.
____ is Electromagnetic radiation with a wave length shorter than___ but longer than___ and only visible to some.
It is a wave length just above violet and above the visible spectrum of light both are not really light at all their wave length of electromagnetic radiation.A catalyst speeds up a chemical reaction with either heat or this____.It has more energy and doesn’t penetrate as deeply as visible light.
UV radiation. visible light x-rays insects or birds Uv radiation
This measures the pressure of force, it pushes the flow of electrons forward through complete electric____. No pressure equals no flow. A cars pressure is 12_ a houses is 110 and ACs and dryer’s are 220.
Voltage, circuit, V.
This is how much electricity is being used per _____.
So a 40 ___ lightbulb will use 40 ___ per ___.It doesn’t really indicate how bright or powerful a lightbulb is just how much electricity it uses. Replacement bulbs should be the same as the original to maintain quality of service.
Watts, second, W. W Second
____. Is The number of electrons flowing through a complete electric____. The size must be appropriate for easy flow. The hairdryer with 12 __ must have a cord 2X as Thick if it is only 6__.
(Ampere), Circuit. A. A.
This wave length is below red and the visible spectrum of light
Infrared radiation
It’s 1000th of an ampere. it is the current used for facial and scalp treatments because an amp is too strong and will damage the skin
Milliampere - mA
Current will not flow through an electric current unless this is stronger than the resistance OHm
Force, volts
What does wattage tell you about Uv nail lamp bulbs
How much electricity it’ll use
What type of electrical plug offers the most protection for you and your client
One with two rectangular prongs and a third circular ground
What is in ordinary water that makes it a good conductor of electricity
Ions
Silk, wood, and cement make good insulators but ___ does not
Copper
The speeds up a chemical reaction and is used to make chemical reactions happen faster
Catalyst
Electromagnetic radiation is also called this because it carries or radiates energy through space on waves
Radiant energy / visible light
Is the number of waves within a given length. Long wavelengths=low (less frequent) & violet has the shortest. ___the longest
Frequency, red
This converts electricity into heat by providing resistance to an electric current.They are large enough to carry the current and are designed to overheat so they are safe if used properly. However electrical wires in the wall or appliance cord are not designed for this and can cause a fire
Heating element
The distance between two successive peaks is called the
Wave length
The movement of electrons from one atom to another along a conductor it doesn’t occupy space or have mass so it isn’t matter it can have a magnetic chemical or thermal affect
Electricity
It easily allows the flow of electricity with little resistance most metals are good for this but pure water is poor. Tap and lake or ocean water are good due to its ions. Which is why swimming during lightning storms or using electrical appliances is not recommended
Conductor
This is a non-conductor it doesn’t allow flow of electricity easily examples are silk would glass cement and rubber. Wires are usually twisted metal threads and covered in plastic or rubber.
Insulator
The flow of electricity in a complete e- circuit. A closed loop conducts electricity and provides a return pass for the current is a ___.
Electric current, Complete electrical circuit
The strength of an electric current is this times this
Amps x voltage
These wavelengths have lower frequencies and they penetrate deeper they have less energy. And these wave links have higher frequency penetrate less and they have much more energy
Long
Short
Safety measures include using all you well certified appliances. Disconnecting things after use. Keeping in good repair. Avoiding water and metal contact while plugged. Not cleaning while plugged. Not stepping on or storing objects on cords. Pulling on plug not cord. Reading instructions first. Inspecting regularly. One plug per outlet. Don’t leave clients unattended. Don’t allow twisted cords. Don’t attempt repairs
All fone
These two are not really light at all they are the wavelengths of electromagnetic radiation that are just beyond the visible spectrum. I frequencies outside of our visible spectrum may be visible to insects and birds like the radio microwave infared ultraviolet x-rays and gamma ray
Infeared and ultraviolet rays
