The National Grid (AQA GCSE Physics): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is the National Grid?
What is the National Grid?
A network of wires transmitting electricity
What does the National Grid NOT include?
What does the National Grid NOT include?
The power stations and end users
Why does the National Grid use high voltage and low current?
Why does the National Grid use high voltage and low current?
For more efficient transmission
Which equation shows power wasted as heat in wires?
Which equation shows power wasted as heat in wires?
If current is halved, by how much do energy losses reduce?
If current is halved, by how much do energy losses reduce?
Four times
If current increases 10 times, energy losses increase by how much?
If current increases 10 times, energy losses increase by how much?
100 times
Where are step-up transformers located?
Where are step-up transformers located?
Near power stations
What voltage do step-up transformers increase to?
What voltage do step-up transformers increase to?
132kV or higher
What voltage is supplied to homes?
What voltage is supplied to homes?
230V
What voltage level is used for transmission across the country?
What voltage level is used for transmission across the country?
132kV or higher
What voltage is supplied to light industry?
What voltage is supplied to light industry?
11kV
Where are step-down transformers located?
Where are step-down transformers located?
Near homes and industry