8.2.3 - The National Grid

Question 1

Why are transformers used in the national grid?

Answer 1

Because there is a large amount of wires, you do not ant to heat the surroundings.

Question 2

What do transformers do?

Answer 2

Change the p.d.

Question 3

Will a high voltage cause a low amount of heating or a high amount of heating?

Answer 3

Low.

High voltage = less heating.

Step-up = going into the national grid where there is a lot of wires!!

Question 4

What are the 7 steps of the national grid?

Answer 4

1. Power Stations.
2. Step-up transformer.
3. Grid Network.
4. Step-down transformer.
5. Grid Network. - smaller than before.
6. Transformer Substations.
7. Offices and Homes