4.1.1: Charge Flashcards
(9 cards)
1
Q
Current
A
Rate of flow of charge
I = Q/t
2
Q
Coulomb
A
Unit of charge;
The amount of charge that passes in 1 second when the current is 1 ampere.
3
Q
Conservation of charge
A
Electric charge can neither be created nor destroyed - the total charge in any interaction must be the same before and after the interaction
4
Q
Elementary charge e
A
1.6x10^-19 C
5
Q
Net charge
A
Net charge on a particle or object is quantised and a multiple of e
6
Q
Current
A
The movement of electrons in metals and ions in electrolytes
7
Q
Conventional current
A
Positive to negative
8
Q
Electron flow
A
Negative to Positive
9
Q
Kirchhoff’s First Law: Conservation of Charge
A
Total current flowing into a junction is equal to total current flowing out of a junction
This is due to the conservation of charge
