The National Grid is a system of what?

A system of cables and transformers

A system of cables, transformers and power stations

A system of cables, transformers, power stations and consumers

When the National Grid was established, the cables were all carried by pylons. Now, some of the cables of the supergrid have been buried underground. Which of the following is not an advantage of buried high voltage cables?

Underground cables lose less energy

Underground cables are less likely to be damaged or broken in bad weather

Underground cables are more expensive to install

Underground cables have lower maintenance costs

Which of the following would be a good stand-by power station?

Pumped storage hydroelectric power station

Which of the following is not an advantage of the National Grid?

Electricity is available at a standard voltage throughout Britain

If a power station breaks down, others can increase output to compensate

It makes electricity much cheaper

Sudden increased demands in electricity can be met

Why are CHP (combined heat and power) stations more efficient than most fossil fuel burning power stations?

They use the heat to heat local buildings as well as to generate electricity

They are run by local businesses so they have to be more efficient to make them more profit

Why is electricity carried by the supergrid at very high voltage?

That is the voltage that power station generators produce

At lower voltages, it would not have the power to go all over the country

Where would you find a step-down transformer?

In an electricity substation near to the consumers

Part way along the power cables of the National Grid

Which of the following contains the missing words from the passage in the correct order? ________ transformers are used at power stations to produce the very high ____________ needed to ensure that electricity is transmitted efficiently through the National Grid. Such high voltages are dangerous to use in the home, so _________ transformers are used in substations near to homes to reduce the voltage to safe levels. The voltage of ________ electricity is about 230 V.

Step-up, voltages, step-down, household

Step-up, current, step-down, safe

Step-down, voltages, step-up, factory

GCSEScience★★ Medium

GCSE Science Physics - The National Grid (AQA) Quiz

To do well in GCSE science, Year 10 and Year 11 students need to understand electrical energy. One aspect of this, covered in the physics section of AQA's Syll…

Written by Daniel FosterReviewed by Dr. Emma ClarkeUpdated 17 Mar 2026

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Topic: Physics The National Grid Aqa Syllabus A

Questions: 10

Duration: 10 min

Difficulty: ★★ Medium

Focus: applying Physics The National Grid Aqa Syllabus A with consistent method and answer precision.

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It measures applied accuracy in physics the national grid aqa syllabus a, not just definition recall.

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Description

To do well in GCSE science, Year 10 and Year 11 students need to understand electrical energy. One aspect of this, covered in the physics section of AQA's Syllabus A, is how electricity is transferred from power stations via the national grid. To help you revise we've created this quiz on the topic.

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