Learning objective
Define power as the rate at which energy is transferred.
Read the explanation, check the common trap, then practise with flashcards and questions.
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Topic
Energy changes in a system, and the ways energy is stored before and after such changes
Subtopic
Power
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Quick explanation
Define power as the rate at which energy is transferred
- This point belongs to Energy changes in a system, and the ways energy is stored before and after such changes, especially Power.
- You need to be able to define power as the rate at which energy is transferred.
- 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
Why it matters
This objective helps connect Power to exam-style questions, flashcards, and revision notes for Energy changes in a system, and the ways energy is stored before and after such changes.
Quick student answer
What is power?
Direct answer
In Physics, this page helps you answer questions about power within Energy changes in a system, and the ways energy is stored before and after such changes. Focus on the key process, correct scientific terms, and how the idea links to exam-style questions. Key terms to check are power and rate of energy transfer.
Key terms
- power: the rate at which energy is transferred.
- rate of energy transfer: the speed at which energy moves from one system to another.
Common trap
Misunderstanding Power Definition: Emphasize that power is defined as the rate at which energy is transferred, measured in watts (joules per second).
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Revision notestopic notes
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Open revision notesRelated learning objectives
- Define a system as an object or a group of objects being considered together.
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- Describe how the way energy is stored changes when a physical system changes.
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- Describe energy-store changes when an object is projected upwards.
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- Describe energy-store changes when a moving object hits an obstacle.
Energy stores and systems
- Describe energy-store changes when an object is accelerated by a constant force.
Energy stores and systems