20.1 - electric charge and static electricity Flashcards
(17 cards)
what is electric charge
a property that causes subatomic particles to repel/attract each other
if atoms GAIN electrons, they become…
negatively charged
is atoms LOSE electrons, they become…
positively charged
what is the SI unit of electric charge?
couloumb (c)
what is electric force?
the FORCE OF attraction/repulsion between electrically charged objects
electric force between 2 objects is ___________ proportional to the net charge on each object
directly
electric force is _____________ proportional to the square of the distance between objects
inversely
directly proportional
2 quantities increase/decrease with the same amount together
inversley proportional
while 1 quantity increases/decreases, the other does the opposite
electric forces are much stronger than ____________ in an atom
gravitational forces
what is electric field?
the effect an electric charge has on other charges in that space around it
what is static electricity?
the study of behavior of electric charges
what is the law of conservation of charge?
total charge in an isolated system is constant
example of charging by friction?
rubbing a balloon on your hair
what is charging by contact?
when a charged object touches an uncharged object and some of the charge in transferred
what is charging by induction?
a transfer of charge without contact between materials
what is static discharge?
a pathway through which charges can move forms suddenly (shock from doorknob)
