detecting static charges Flashcards
what is an electroscope?
an instrument that can detect static charge
what does it mean to charge an object?
to create an excess of either positive or negative charges
what are the three methods in charging statics?
- friction
- contact (conduction)
- induction
friction
when objects of different materials rub each other, what is transferred, causing static charge?
electrons
friction
when the electrons are transferred, one object becomes ______ and the other becomes ______
positive / negative
which material (based on the triboelectric series) gains the electrons?
lower materials
which charges move?
negative (electrons)
contact
when objects with different electric charges touch one another, what happens?
the objects balance one another by transferring electrons
contact
when a charged object touches a neutral object, what happens to the neutral object’s charge?
it also becomes charged
when two charged objects touch, electrons from the object with the higher or lower charge move to the other object to balance the charge?
higher charge electrons => lower charge object
never move which charges (in diagrams)?
positive
what is an easy way to find the amount of charges to move?
divide charges
ex. 6/2 = move 3 electrons
