chapter 11 Flashcards
what are the three laws of electric charges
like charges repel, opposite charges attract, neutral objects are attracted to charged objects
charged by friction
when two neutral objects rub against each other
charged by conduction
when two charged objects come in contact. the electrons move to the other object
conductor
materials can let electrons travel easily (usually metals)
insulator
materials won’t let electrons travel easily (usually non metals)
charged by induction
charged without contact. can be temporary or permanently
difference between charging by friction and temporary charged by induction
friction is two neutral objects rubbing together and temporary induction is negatively charged object and a neutral object meet
(+4) + (-3)
+1
(+7) + (-9)
-2
two applications of electrostatics
electrostatic paint sprayers and electrostatic speakers
does static electricity mean that the charges never move
no, some repel and some attract
why do electrons travel while protons dont
the electrons are on an orbit while protons are in the nucleus
what would happen is two solids, one positively charged and the other also positively charged but with negative charges came in contact
if they came into contact the electrons would move to the object with a less negative charge
what causes the buildup of an electrostatic charge
the imbalance of electrical charges on the surface of an object builds up
why do clothes stick to each other when coming out of the dryer
clothes A pulls electrons from clothes B. clothes A becomes positively charged and clothes B becomes negatively charged
