Learning objective
Apply WS 1.4 when explaining the efficiency of power transmission.
Read the explanation, check the common trap, then practise with flashcards and questions.
At a glance
5
Flashcards
7
Questions
Topic
Energy transfers
Subtopic
The National Grid
Study support
Understand this objective
Short explanation
Apply WS 1.4 when explaining the efficiency of power transmission sits inside The National Grid, not as a generic electricity prompt. Students should first identify the diagram symbols and connection order that the question gives, then connect it to Energy transfers using precise AQA GCSE Physics vocabulary. Key terms for this page include efficiency, and they should be used to separate related ideas such as current, potential difference, resistance, power, energy transfer, component behaviour and circuit arrangement. A strong answer states the relevant rule, applies it to the named situation, keeps units or graph features visible where needed, and avoids borrowing a rule from a neighbouring subtopic just because the wording sounds familiar.
Key concepts
Why it matters
This objective helps connect The National Grid to exam-style questions, flashcards, and revision notes for Energy transfers.
Common mistakes
1 linked- The National Grid common mistake 1: Answer by clearly explaining how to apply WS 1.4 when explaining the efficiency of power transmission..
Revision tools
Choose how to practise
Flashcards5 linked cards
Flashcard 1 of 5
Practice Questions7 linked questions
Question 1 of 7
Choose an answer, get feedback, then move sideways through the set.
Revision notestopic notes
Open the full topic revision notes when you are ready to review this objective in context.
Open revision notesRelated learning objectives
- Explain that power transfer in a circuit device is related to potential difference across it and current through it.
Power
- Explain that power transfer is related to energy changes over time.
Power
- Recall and apply the equation P = V x I.
Power
- Recall and apply the equation P = I^2 x R.
Power
- Identify power P in watts, potential difference V in volts, current I in amperes and resistance R in ohms.
Power
