Electrons and Charge Chapter 4 Flashcards
1
Q
What is current?
A
Rate of flow of charge
2
Q
What is elementary charge? What is its unit?
A
1.6 x 10^-19
Coulomb
3
Q
Define one coulomb.
A
-One C is equivalent to the charge transported by 1 ampere of current in one second
4
Q
What are the charge carriers in metals?
A
Electrons?
5
Q
What are the charge carriers in an electrolye?
A
ions
6
Q
What is Kirchhoff’s 1st law?
A
Sum of current in a point is sum of current out.
7
Q
What is mean drift velocity
A
-Average velocity of charge carrier in a conductor
8
Q
Factors affecting current?
A
-Cross sectional area
-Mean drift velocity
-Number of charge carriers
9
Q
What is the current new equation?
A
I = nAve
