Electricity And The National Grid Flashcards Preview

AQA GCSE Core Physics 1b > Electricity And The National Grid > Flashcards

Flashcards in Electricity And The National Grid Deck (6)
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1
Q

What is the national grid

A

The network of pylons and cables that covers the whole of Britain, getting electricity to homes everywhere

2
Q

What does the national grid do?

A
  • Takes electrical energy from power stations to where it’s needed
3
Q

To transmit the huge amount of power needed you need….

A

Either high voltage or a high current

4
Q

What’s the problem with a high current

A

You lose loads of energy through heat in the cables

5
Q

What do the transformers have to do

A
  • Step up the voltage at one end for efficient transmission

- Bring it back down to safe, usable levels at the other end

6
Q

The voltage is increased using a

A

Step up transformer