Flashcards in Chaper 4-Electricity Deck (64)
AKA Electric potential. Higher voltage-higher potential.
Flow of electrons
Matter through which electrons flow easily
Matter that inhibits flow of electrons
Most ____ are good conductors
Ex silver, gold, copper
Glass, clay, rubber, plastic are all examples of _______
Under some conditions behaves as an insulator and sometimes as a conductor
property of limited resistance to electron flow below a critical temperature.
Electrons flow on the ____ surface of a wire
When resistance is controlled and electrons flow over a crossed path
Length is _____ proportional to resistance
Measures number of electrons flowing in electric circuit
Measures electric potential
Unit of electrical resistance
Ohm's law ______
All circuit elements are connected in a line along same conductor
__1__ of voltage across each circuit element=__2__ circuit voltage
Has elements that bridge conductors rather than lie in a line along a conductor
__1__ of all CURRENTS through each circuit element=total __2__ current
Does voltage change in a parallel circuit?
_____ NEVER changes in a SERIES circuit
DC=electrons flowing in _____ direction(s) along a conductor
AC=current in which electrons ______ back an forth
Horizontal or X-axis of waveform represents __1__. Vertical or y-axis represents __2__ of current
For DC, electrons always flow in the same __1__ with same velocity, so DC is represented by a __2__ line.
_____ separation between line and time axis represents magnitude of current
Are series elements interdependent or independent
Parallel elements are _____
Waveform for AC is _____