AQA GCSE Physics Focus Questions on The National Grid

Focus Questions on The National Grid for AQA GCSE Physics

1. Copy and complete the following sentence: The National Grid is a system of ____________ and ___________ linking power stations to consumers.
2. What is transferred to consumers via the National Grid? 
3. What is the purpose of a step-up transformer in the national grid system? 
4. What is the purpose of a step-down transformer in the national grid system? 
5. Why is the National Grid system is an efficient way to transfer energy?