The quantity of charges that move past a given point in a circuit per unit of time
100
What is Kerchoff's Voltage Law?
Around any complete path through an electric circuit, the sum of the increases in electric potential is equal to the sum of decreases in electric potential
100
What is Coulomb's constant?
8.99 x 10^9 Nm^2/Coulomb^2
100
The number of field lines is __________ to the charge
porpotional
100
What device measures amps?
Ammeter
200
What is equal to 1 coulomb of charge per second?
1 amp
200
What is the Junction rule?
At any junction point in an electric circuit, the total electric current into the junction is equal to the total electric current out
200
Electric field lines are always directed _____ from positive charges
away
200
Do field lines cross?
No
200
How are voltmeters connected to a circuit?
Connected across the source and the bulb in the circuit
300
What is electrical potential difference measured in?
Volts
300
Does a parallel circuit always have identical motors, bulbs, etc?
No
300
Electric field lines are always directed _____ negative charges
towards
300
How do field lines arrive and leave at the surface?
At a 90 degree angle
300
In a series circuit, are the amps equal or added?
Equal
400
Charges ______ energy across a cell
gain
400
What is the formula for the relationship between potential difference and current?
V o< I
400
The density of a line indicated what?
Intensity of field
400
1 joule/coulomb is equal to what?
1 volt
400
What happens if a neutral touches a charge?
Gains the charge and is repelled
500
An alternating current has what kind of magnitude?
Variable magnitude
500
In a parallel circuit, are the voltages added or equal?
Equal
500
What is a dipole?
Two seperated point charges that have the same magnitude but opposite signs