3. Electric Current Flashcards
1
Q
What is an electric current (1)
A
Movement of electrical charge through a conductor
2
Q
Define a conductor (1)
A
Matter that allows electricity to flow through
3
Q
Give an eg of good conductors (1)
A
Metals
4
Q
What is an insulator (1) and give an eg
A
a substance that doesn’t allow heat to flow through, plastic/rubber
5
Q
What 3 things are needed for a current to flow (3)
A
~source
~conductors
~ a complete circuit
6
Q
What 2 things are usually energy sources (2)
A
~generators
~cells
7
Q
what source is used to generate large scales of energy
A
Fossil fuels
