Topic 2 - Electricity Flashcards
1
Q
What is a conductor?
A
A material that allows the flow of electricity through it.
E.g. metals
2
Q
What is an insulator?
A
A material which don’t allow the flow of electricity through them because they don’t have free electrons.
E.g. plastic
3
Q
What allows metals to conduct electricity?
A
The delocalised electrons which are free to flow through the metal and carry a current
4
Q
Why do cables have plastic coatings?
A
It’s used as an insulator to prevent electricity from flowing into you if you touched the wire.
5
Q
What is needed for an electric current to work?
A
- source of energy
- a component
- a complete loop
- no short circuits
6
Q
What is an electric circuit?
A
A path for an electric charge to flow along.
7
Q
What is the difference between a series circuit and a parallel circuit?
A
A series circuit
