Electricity Flashcards
1
Q
What is electrical current
A
Electric current is the rate of flow of electrical charge.
2
Q
What does a characteristic graph for a resistance -current graph look like?
A
A directly proportional line
3
Q
What happens in a series circuit?
A
The current flows in one loop.
4
Q
What is a parallel circuit?
A
A circuit that flows through multiple loops
5
Q
What does the live wire(brown) do?
A
Provides alternating potential difference from the supply.
6
Q
What does the neutral wire (blue) do?
A
Completes the circuit.
7
Q
What does the earth wire do (green and yellow stripes)
A
Earth wire is entered in the ground to prevent electrical shocks
8
Q
What is a national grid?
A
National grid is a system of transformers and cables linking power stations to consumers
