H1 Physics 8867 · Topic 4
Energy and Fields
A reviewed 8867 repair guide for Energy and Fields.
Before you begin
Use the diagnostic first. Complete the assigned explanation, worked transfer, guided practice and independent practice in order before the assessment and delayed re-test.
How the ideas connect
- Energy stores, work and kinetic energy
- Fields and potential energy
- Power and efficiency
Learn in order
Lesson route
Objective clusters
- 01Energy stores, work and kinetic energyTrack energy transfers across a declared system boundary; work is force times displacement in the force direction and derives the kinetic-energy change.
- 02Fields and potential energyField work equals the negative potential-energy change; field lines show force direction and elastic energy is area under the force–extension graph.
- 03Power and efficiencyPower is energy transferred per unit time, mechanical power uses the force component along velocity, and efficiency is useful output over total input.
Prove your understanding
Practice and repair
Key ideas and reference
Use these Energy and Fields checkpoints to choose the objective cluster that needs attention.
- A reviewed 8867 repair guide for Energy and Fields.
- Track energy transfers across a declared system boundary; work is force times displacement in the force direction and derives the kinetic-energy change.
- Field work equals the negative potential-energy change; field lines show force direction and elastic energy is area under the force–extension graph.
- Power is energy transferred per unit time, mechanical power uses the force component along velocity, and efficiency is useful output over total input.
Course coverage and review details
Restricted to 8867 topic 4(a)–(n), PDF page 13; H2-only depth and omitted H2 topics do not contribute to this profile.
Recorded selected-response work supports formative repair. It does not by itself prove constructed, diagrammatic or practical performance.
Reviewed 2026-08-01