chapter 20 review Flashcards
Two positive charges that come next to each other will ______ eachother.
repel
Two negative charges that come next to each other will ______ eachother.
repel
A positive and negative charge that come near each other will _____ each other
attract
what 3 things is each of the elements on the periodic table made of?
protons, electrons, and neutrons
protons have a ___ charge
positive
electrons have a ____ charge
negative
neutrons have _______
no charge
What is an electric force?
the attraction between electric charges
Why don’t you have to touch a charged object to feel the effects of the charged object?
It has an electric field
What is static electricity?
a stationary (does not move) electric charge
Charging by friction
feet rubbing against the ground
charging by conduction
electrons flowing from feet to body to hand
charging by induction
hand to door nob
what is an instrument that can detect an electric charge
electroscope
what is static discharge
the transfer of electric charges from one object to another.
What is an electric current
the continuous flow of electric charges through a material
SI unit for electric current is
amp (A)
what does an electric current require to flow?
an electric current
_____ transfer energy well
conductors
examples of conductors
aluminum, copper, silver
______ do not conduct electricity well
insulators
examples of insulators
rubber, plastic, glass
The difference in electrical potential energy between two places in a circuit is called ____
voltage
_____ causes a current in an electric current
voltage
