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Basic Electrical theory test 1
Basic Electrical theory chapter 1 northwest lineman college
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02/11/2015

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Term
Atom
Definition
basic building block of the universe
Term
atoms
Definition
incredibly small, too small to even be seen with microscope
Term
Protons
Definition
part of atom has positive charge
Term
Electron
Definition
part of atom that has negative charge
Term
Nucleus
Definition
part of atom that is a combination of proton and neutron
Term
neutron
Definition
part of atom that has no charge
Term
Inward
Definition
electrons are negative charge which means their line of force goes which way
Term
Electrons
Definition
capable of moving between atoms, can even be shared
Term
Protons
Definition
Generally located near the atoms center as part of the nucleus
Term
Neutrons
Definition
have no charge; about the same size as proton.
exists to hold atom together because protons atempt to push away if left alone
Term
Nucleus
Definition
has a net positive charge
Term
law of charges
Definition
states that opposite charges attract and like charges repel
Term
lines of force
Definition
lines that never cross but exert force without movement
Term
law of centrifugal force
Definition
spinning object will pull away from its center point, faster it spins, the greater the force; atom spins
Term
shell
Definition
contains electrons that orbit
Term
valance shell
Definition
outer most shell of atom that has negative charge
Term
1-3
Definition
good conductors contain this amount of electrons
Term
4-6
Definition
semi conductor material contains this many electrons
Term
7-8
Definition
amount of electrons in good insulators
Term
Current Flow
Definition
chain reaction of electrons; electrons are knocked in and out of their volts
Term
electron theory of current flow
Definition
theory that states electrons are negative particles, current flows from the most negative point in a complete circuit to the most positive point
Term
Flux
Definition
Magnetic lines of force also known as
Term
lines of flux
Definition
repel each other and never cross
Term
iron nickel and cobalt
Definition
3 metals that have molecular properties that allow them to become magnetized
Term
magnetic field
Definition
whenever current flows through a conductor this is produced around it
Term
Voltage and current flow
Definition
intensity of magnetic field varies on what
Term
Magnetic induction
Definition
current is produced in the conductor, when a conductor is passed through a magnetic field
Term
Alternating current
Definition
power that is produced by a magnetic field near a conductor
Term
Silver
Definition
best natural conductor
Term
electrical current
Definition
flow of electricity
Term
coiling the conductor
Definition
intensifies the line of flux in small areas, will increase the magnetic field
Term
iron core
Definition
using this type of core makes it easier for flux to exist (concentrates line of flux)
Term
static electricity
Definition
charge and not the flow of current
Term
positive charge
Definition
if a material lacks electrons is what kind of charge
Term
negative charge
Definition
if the material that has extra electrons what kind of charge is it
Term
friction
Definition
required to create static electricity
Term
static discharge
Definition
equaling the amount of electrons between two points
Term
lightning
Definition
greatest display of static electricity
Term
Cloud to cloud
cloud to ground
Ground to cloud
within the same cloud
Definition
lightning discharges from
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