3.5.1.1 Basics of electricity Flashcards
1
Q
What is current?
A
The rate of flow of charge
I = deltaQ/deltat
2
Q
What is a coloumb?
A
The unit of charge
- one coulomb is defined as the amount of charge that passes in one second when the current is 1 amp.
3
Q
How can you measure the current around a circuit?
A
Using an ammeter in series
4
Q
What is potential difference?
A
Work done per unit charge
V=W/Q
5
Q
What is the equivalent of 1 V?
A
1J/C
6
Q
What is resistance?
A
How difficult it is for the current to flow through a material
R=V/I
