Energy and Fields
Learn the complete H1 Physics 8867 Energy and Fields scope through clear explanations, worked methods and purposeful practice.
Learning goals
- Track energy stores and transfers, then apply conservation of energy.
- Define work and derive and apply the kinetic-energy relationship.
- Derive Eₖ = ½mv² from the definition of work done by a force and the uniformly accelerated motion equations.
- Represent fields and relate work done by a field to potential-energy change.
- Draw field-line representations of uniform and radial gravitational and electric fields.
- Use force–extension graphs to determine elastic potential energy.
- Apply power, mechanical power and efficiency relationships.
Before you begin
Start with the first lesson if this topic is new. If you are revising, use Check your understanding to find the lesson that deserves your attention, then work from the explanation to supported and independent practice.
Be comfortable with: Motion and Forces
How the ideas connect
- Energy stores, work and kinetic energy
- Fields and potential energy
- Power and efficiency
Learn in order
Lesson route
Learn the topic
- 01Energy stores, work and kinetic energyEnergy accounting becomes reliable when you choose a system and name the transfers across its boundary. Work is the mechanical route by which a force transfers energy.35 min
- 02Fields and potential energyA field assigns a force tendency to each point in space. Potential energy belongs to the interacting system, and it falls when the field does positive work.35 min
- 03Power and efficiencyPower tells you how quickly energy is transferred. Efficiency compares useful output with total input and helps explain why real devices need cooling, fuel or larger power supplies.35 min
Check your understanding
Practice and check
What you will learn
These lessons cover the complete H1 Energy and Fields scope in a deliberate order.
- Identify energy stores and transfers and apply conservation.
- Calculate work using the displacement component along a force.
- Define gravitational and electric field strength and read field-line patterns.
- Relate work by a field to potential-energy change.
- Define power as energy transferred per unit time.
- Use mechanical power from the force component along velocity.
Syllabus and review details
Covers the complete 2027 H1 Physics 8867 requirements for Energy and Fields; H2-only extensions are deliberately left out.
Use written working, labelled diagrams and clear physical reasoning as well as final answers. The lesson questions are designed to prepare you for both calculations and explanations.
Curriculum and content checked 2026-09-14
Frequently asked questions
Where should I start in Energy and Fields?
Start with Energy stores, work and kinetic energy. The 3 lessons build in order, and each one ends with an independent question and a clear next step.
How should I use the worked examples?
Cover the steps, attempt the question first, then compare your method line by line. Check the sign, direction, unit and size of your result.
What should I do when I finish the lessons?
Use Check your understanding, revisit any weak lesson, then complete the practice plan without looking at the worked answers.
Course and syllabus information
- Course
- GCE A-Level H1 Physics
- Edition
- GCE A-Level H1 Physics 2027