Chapter 9 and 10 Review Flashcards
what is the study of the nature, behavior and uses of static stationary electricity related phenomenon
electrostatics
protons and electrons posses a certain amount of ____ which is a property that allows them to attract or repel other charged particles
electric charge
what is defined as the interaction btw electrons and other charged particles
electricity
if an object has an equal number of protons to electrons, it is …?
neutral
what is the SI unit of electric charge
coulomb
what states that opposites attract and likes repel in relation to charges
law of electric charge
what are the imaginary lines of electric force called
lines of force
what type of electric field occurs when the strength is equal throughout
uniform field
name the ways that charge can be transferred
induction and conduction
which method of charge transfer occurs over a distance
induction
which method of charge transfer produces an opposite charge
induction
what is the flow of charge
current
what is a simple device that uses the law of electrostatics to detect a small amount of charge
electroscope
what is the flow of electrons or other charged particles from one place to another
current electricity
what type of current flows in only one direction
direct current
SI unit of current
ampere
what is defined as the work per charge
voltage
what does the unit of a volt reduce to
joule per coulomb
what is the equation to determine the power of electric consumption
p = vi
SI unit of power
watt
unit of electric power cosumption
kilowatt hour
the amount a certain object hinders electron flow
resistance
Si unit of resistance
ohm
the type of material that readily transmits electricity
conductor
what type of material is not a good insulator or conductor
semiconductor
what is the resistance that is converted into heat
joule heat
material allowing current to flow through it with no resistance
superconductor
law that helps us understand the relationship btwn voltage, current, and resistance
ohms law
what is any electrical device designed to add resistance to a circuit
resistor
the 3 components of any circuit
load, set of conductors, and a source of current
device that may be included in the circuit and is responsible for opening or closing the circuit
switch
is the circuit open or closed if electricity is flowing
closed
what type of circuit occurs when the electricity bypasses the load
short circuit
what is a simple circuit protection device that uses a thin strip of metal to protect the circuit
fuse
circuit protection device that acts like a switch
circuit breaker
circuits can be arranged in one of two ways, which arrangement occurs if we have loads on after another
series
how do you find the equivalent resistance of resistors that are in parallel
add the inverses of the resistance of each load, then inverse it again
what quantity is the same thru series resistors
the current
what is an obj capable of attracting materials like iron or steel by magnetic force
magnet
what do we call regions of concentrated magnetism
poles
what states that opposite poles attract and like poles repel
law of magnetic poles
what is the property of attracting an object by a magnetic force
magnetism
magnetic force btwn 2 object is proportional how with respect to the strength of the poles
directly proportional
what si the ability of a material to absorb lines of flux
permeability
name the ways a magnetic field is produced
unpaired electrons, electrons spinning,
what is group of aligned atoms having a single magnetic field
domain
what theory states that once all the regions of a magnetic material align it will form a magnet
domain theory
the magnetic material that is weakly attracted to a magnet
pairamagnetic
what type of material is strongly attracted to a magnet
ferromagnetic
type of magnet readily loses or gains its magnetism
temporary magnet
what type of material does not readily become magnetic
magnetically hard
2 ways we can magnetize something
conduction, induction
what rule allows us to determine the directional of a magnetic field around a wire or loop
left hand rule
name the 3 ways an electromagnet’s strength can be increase
- adding a core
- increase electric flow/current
- create more loops in the wire
what do we call the force existing in a magnetic field that causes a moving electric charge to deviate from its path
deflecting force
what is the point at which we can heat a magnet and it loses its magnetism
curie point
name of the book that Gilbert published his findings about earth being a magnet
de magnete
the resistance of a magnet to be demagnetized by a magnetic field
coercivity
a simple type of navigational device consisting of a magnet swinging freely so it aways points north
compass
the north magnetic pole is actually what type of pole
south-seeking
what is the deviation of a compass from true north
declination
what is a map that shows the angle of declination for the entire earth
isogonic map
what is the imaginary line that encircles halfway btwn the 2 magnetic poles
magnetic equator
a map that has lines running east to west that have lines of equal inclination
isoclinic lines
what is the extent of a planets magnetic field
magnetosphere
the magnetosphere is distorted by what?
solar winds
what are the two vast doughnut shaped belts of high speed charged particles that protect the earth from radiation
van allen radiation belts
