P3 Flashcards
what can happen when insulating materials are rubbed together
they can become (statically) electrically charged
why can insulators become electrically charged when rubbed together
-electrons are rubbed from one material to another
-The material gaining electron becomes negatively charged
-The material losing electrons becomes positively charged
what is charging
The addition or removal of electrons from a material
how can a charge be detected
-using a gold leaf electroscope
-The gold leaf is repelled by a positive charge
What happens when two electrically charged objects are bought close together
they exert a force on each other.
What happens when two oppositely charged objects are brought together?
They exert an attractive force on each other and attract.
what happens when two identically
charged objects are bought together?
they exert a repulsive force on each other and repel
why are most bodies neutrally charged
they have an equal number of negative and positive charges
give an example of a non contact force
The repulsive or attractive force acting between 2 electrically charged objects
what is an electric field
A region in which a charged object experiences a noncontact electrical force
where can electric currents be found
surrounding any charged object
Describing an electric field around a charge particle
-strongest closest to the object
-decreases in strength as you move away from the object
what happens to the force of a charged object when they are moved close together
The force between them grow stronger as the separation reduces
In situations where sparks aren’t wanted what prevention must be taken to reduce the buildup of static charge
Any surfaces that are against each other should be allow all materials to discharge
what is an electric current?
the flow of an electrical charge
