Learning objective
Use electrical power and energy equations in circuit contexts.
Read the explanation, check the common trap, then practise with flashcards and questions.
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Topic
Current electricity
Subtopic
Basics of electricity
Aqa A Level PhysicsElectricity
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Quick explanation
Use electrical power and energy equations in circuit contexts
- This point belongs to Current electricity, especially Basics of electricity.
- You need to be able to use electrical power and energy equations in circuit contexts.
- The key ideas to know are power.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
power
Why it matters
This objective helps connect Basics of electricity to exam-style questions, flashcards, and revision notes for Current electricity.
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Revision notestopic notes
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Open revision notesRelated learning objectives
- Use current as the rate of flow of charge.
Basics of electricity
- Use potential difference as energy transferred per unit charge.
Basics of electricity
- Apply Ohm's law to suitable conductors.
Basics of electricity
- Interpret I-V graphs for ohmic conductors.
Current-voltage characteristics
- Explain the I-V characteristic of a filament lamp.
Current-voltage characteristics