Flashcards in 4.1 - Charge and Current Deck (7):
What is a Coulomb?
The quantity of charge that passes a fixed point in one second
What is Electric Current?
A flow of charge. Measured in amperes (Amps or A)
What is Conventional Current?
A model used to describe the movement of charge in a circuit from the positive terminal of a cell to the negative terminal
What is Electron Flow?
The fact that charge carriers (electrons) flow from the negative terminal to the positive terminal
What is Kirchoff's First Law?
The sum of currents entering any junction is always equal to the sum of the currents leaving the junction
What is each letter in I=nAve?
I = Current
n = the number of free electrons per unit volume
A = cross sectional area of the wire
e = the charge on the electron (1.602 x 10^-19C)
v = the mean drift velocity of the electrons