Current 2.1.1 Flashcards
1
Q
What is electric current?
A
The rate of flow of electric charge.
2
Q
In a series circuit (enclosed loop) current is?
A
The same.
3
Q
What is electric current is measured in?
A
Amperes (A).
4
Q
What is the equation linking current with charge and time.
A
I = Q / t
5
Q
What is an electrical conductor?
A
A material that allows electric currents to pass through it.
6
Q
What is an insulator?
A
A material that doesn’t allow electric currents to pass through it.
7
Q
In a metal what are the charges that are free to move?
A
Delocalised electrons.
8
Q
Why are insulators not conductors?
A
They do not have free electrons.
