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what are the five laws of electrostatics?
4)inverse square law
force between 2 charges is directly proportional to the product of their charges and inverserly proportional to the square of the distance between them is known as?
process of electric charges being added/subtracted from an object is known as what?
_____charge=object with weaker negative charge or an object with fewer electrons than another object
materials with the ability to conduct electricity under certain conditions and insulate under other conditions is known as?
allows electrons to flow freely w/no resistance below certain temperatures is known as?
Nature of electron flow is?
1)direction of electron travel
2)quantity of electrons flowing
3)force of electron travel
4)opposition to current flow
what are the two currents for direction of electron flow?
Direct current (DC)
Alternating current (AC)
electric potential determines the speed of electrons that determines penetrability which developes what?
what are the 3 factors that impede the flow of electrons?
1)Length of the conductor
2)crosssectional diameter of the conductor
3)temperature of the conductor
Length of the conductor-as length doubles, resistance does what? and has what proportional relationship?
crosssectional diameter of the conductor-as diameter doubles, resistance does what? and has what type of relationship
temperature of the conductor-
causes increase or decreases of resistance depending on conductor, insulator or semiconductor
formed by controlling the resistance in the closed path of a conductor is known as?
what are some advantages to series circuits?
cheap, easy to fix, repair, replace. greater potential difference=greater total voltage. current remains the same
what are some disadvantages to series circuits?
all resistances have to be operable. failure of one=the whole supply. resistance increases
what are some advantages to parallel circuits?
elements can operate at lower voltage bc voltage doesnt change. failure of one element doesnt interrupt the other . resistance goes down
what are 2 safeguards that break the circuit before a dangerous temeprature is reached?
fuse, circuit breaker
the voltage across the total circuit or any portion of the circuit is equal to the current time the resistance
A material that when combined with some other material can be turned into an insulator or a conductor.
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