Electric Current Flashcards
1
Q
Define (electric) current
A
Current is the rate of flow of charge
2
Q
Where can charge flow? [3]
A
- solids
- liquids
- gases
3
Q
What is electric current in metallic wire (conductor)?
A
It is the drift of ‘free’ electrons.
4
Q
What are free electrons?
A
They are the electrons in the outer shell of the atom, which are not strongly attached to the nucleus and can therefefore can become temporarily dislodged from their atom.
5
Q
How is current measured?
A
It is measured by an ammeter.
6
Q
How is a ammeter connected to a circuit.
A
It is connected in series.
