electricity Flashcards
(17 cards)
what are the 2 types of charge?
positive and negative
what do opposite charges do?
attract eachother
what do like charges do?
repel
what charge is a proton?
positive
what charge is an electron?
negative
what charge is a nucleus?
no charge
which direction do electrons flow in an electrical current?
negative to positive terminal of the battery
what do conductors do?
allow current to flow through them
what do insulators do?
doesn’t allow the flow of current
what is used to measure current
ammeter
what does a battery do?
provides charges with energy
what is the definition of current?
the electrical charge transferred per unit time
what is 1AMP equal to?
1 Coulomb per second
definition of direct current?
when the current only flows in one direction
how does a dc appear on an olioscope display and what does it show?
appears as a straight line and shows the output volatage is constant
what is alternating current?
current will change direction regularly
how does an ac supply appear on an oscilloscope display and what does it show?
as waves, shows that the output voltage varies with time
