Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
31 Cards in this Set
- Front
- Back
|
To fill space between metal plates, add a __________
|
dielectric insulator
|
|
|
dielectric constant (k)
|
reduces voltage
|
|
|
Ground the positive column __________
|
doesn't allow for sparking
|
|
|
If you have charge on each side, it will come to a point when the battery is ____ charged
|
fully
|
|
|
Ne
|
total number of electrons transferred
|
|
|
All electrons begin moving once the _____ is ________.
|
switch; closed
|
|
|
Signal time
|
the time it takes for the electrons to begin movement
- travels almost at the speed of light |
|
|
Ohm's Law
|
V= I * R
|
|
|
Capatance and battery
|
if battery loses power, it is shown through capatance
|
|
|
Vd
|
drift speed
|
|
|
When no battery connected
|
electrons still exhibit fast random motion
|
|
|
Electron current
|
the direction of the electrons
|
|
|
conventional current
|
the direction of the electric field
|
|
|
Direct current
|
The electrons are flowing in the same direction
|
|
|
Alternating current
|
forces electrons to go different directions when current changes directions
|
|
|
Voltmeter reading guide:
|
The slope tells the unknown voltage
|
|
|
The size of a resistor determines its ___________
|
power rating
|
|
|
power rating
|
how much energy per second a resistor can handle without melting or exploding
|
|
|
Where are adjustable resistors used?
|
Used in volume control on TV's/radios or in contrast in computer screen.
|
|
|
Compare A'=2A
|
R'=R/2
|
|
|
compare L'=2L
|
R'=2R
|
|
|
Compare p = 2p
|
R'=2R
|
|
|
Where does charge come from when traveling to the wire?
|
capacitor
|
|
|
In a circuit, the ______ is the same in all places.
|
current (I)
|
|
|
think of switch as having an ________ between it when open
|
insulator
|
|
|
debris analogy (resistance)
|
- if we take debris out, we'll have more flow
- If we put even more debris in, we'll slow down the flow rate |
|
|
What is Vbc when the R is missing
|
there will not be a voltage or conventional current
- Remember voltage between the two points will still be "X" |
|
|
Ideal battery doesn't have ________
|
resistance
|
|
|
Paying electric company
|
they supply the watts (not power).
W = Pt |
|
|
Power is always going to be _____
|
positive
|
|
|
AC means that the light bulb is constantly....
|
going on and off.
|
