Learning objective
Explain that mains electricity is an alternating-current supply.
Read the explanation, check the common trap, then practise with flashcards and questions.
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Topic
Domestic uses and safety
Subtopic
Direct and alternating potential difference
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Understand this objective
Quick explanation
Explain that mains electricity is an alternating-current supply
- This point belongs to Domestic uses and safety, especially Direct and alternating potential difference.
- You need to be able to explain that mains electricity is an alternating-current supply.
- The key ideas to know are mains electricity.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
Why it matters
This objective helps connect Direct and alternating potential difference to exam-style questions, flashcards, and revision notes for Domestic uses and safety.
Quick student answer
How do you explain mains electricity is an alternating-current supply?
Direct answer
In Physics, this page helps you answer questions about mains electricity is an alternating-current supply within Domestic uses and safety. Focus on the key process, correct scientific terms, and how the idea links to exam-style questions. Key terms to check are mains electricity and mains electricity alternating.
Key terms
- mains electricity: mains electricity is a curriculum-aligned term linked to the learning objective: Explain that mains electricity is an alternating-current supply..
- mains electricity alternating: In Direct and alternating potential difference, mains electricity alternating means the precise GCSE Physics idea needed to explain that mains electricity is an alternating-current supply. It helps avoid mixing up current, charge and time.
Common trap
Direct and alternating potential difference common mistake 1: Answer by clearly explaining how to explain that mains electricity is an alternating-current supply..
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Revision notestopic notes
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Open revision notesRelated learning objectives
- State that the UK domestic electricity supply has a frequency of 50 Hz.
Direct and alternating potential difference
- State that the UK domestic electricity supply is about 230 V.
Direct and alternating potential difference
- Explain the difference between direct potential difference and alternating potential difference.
Direct and alternating potential difference
- Identify cells and batteries as common sources of direct potential difference.
Direct and alternating potential difference
- Identify mains electricity as a common source of alternating potential difference.
Direct and alternating potential difference