Edexcel A-Level Physics revision: papers, the 2h30 final, the plan
Edexcel A-Level Physics (9PH0) is three papers: Paper 1 'Advanced Physics I' (90 marks, 1h45) covers mechanics, materials, waves, electricity and further mechanics, Paper 2 'Advanced Physics II' (90 marks, 1h45) covers fields, particles and nuclear, and Paper 3 (120 marks, 2h30) is synoptic across everything with a heavy practical emphasis. Revision should train the long synoptic paper's stamina and Edexcel's strict command words — 'determine', 'show that', 'explain' — which its mark schemes enforce precisely.
Edexcel physics has the same two-plus-one structure as its chemistry: two conventional content papers, then a 150-minute synoptic marathon. The physics version is arguably harder to pace — the questions mix topics freely, and the practical-context questions are longer. Stamina and command-word precision are the two skills the papers actually reward.
The specification, in plain English
| Paper | Content | Time | Marks | Weight |
|---|---|---|---|---|
| Paper 1 | Mechanics, materials, waves, electricity, further mechanics | 1h 45m | 90 | 30% |
| Paper 2 | Fields, particles, nuclear, thermal | 1h 45m | 90 | 30% |
| Paper 3 | General & practical principles — synoptic | 2h 30m | 120 | 40% |
Paper 3 is 40% of the grade and draws on the whole course with an emphasis on practical contexts — a question might present an experiment and ask you to analyse its data, evaluate its method and connect it to theory. It rewards the students who revised physics as one subject rather than a list of topics.
What Edexcel asks that trips people up
- Command-word precision — 'determine' wants a calculated value with working, 'explain' wants the mechanism in words, 'show that' wants the derivation.
- Synoptic questions on Paper 3 that cross topics — a practical scenario spanning fields and mechanics in one question.
- *-marked extended responses where the structure of the argument carries marks.
- Data-analysis questions on unfamiliar experiments — reading a graph, finding an uncertainty, judging the method.
- Practical-context questions worth several marks — improvement, control, validity.
Worked questions in the Edexcel style
A ball is launched horizontally at 8 m/s from a 20 m cliff. Determine the horizontal distance travelled before landing.
- 'Determine' means calculate with working — find the fall time first, vertically.
- s = ½gt²: 20 = 4.9t², so t² = 4.08 and t ≈ 2.02 s.
- Horizontal velocity is constant (no horizontal acceleration): distance = 8 × 2.02 ≈ 16.2 m.
- The two motions are independent — the classic projectile insight the question tests.
- Check significant figures — give the answer to two or three, matching the data.
≈ 16 m. Vertical gives the time; horizontal gives the distance — never the other way round.
A student measures the resistivity of a wire by recording resistance for different lengths. Explain how to find resistivity from the graph and how to reduce uncertainty.
- R = ρL/A rearranges to R = (ρ/A)L — a straight line through the origin.
- Plot R against L: the gradient is ρ/A, so ρ = gradient × A.
- Reduce uncertainty: measure the diameter at several points and average, keep the wire temperature constant.
- The synoptic reach: resistivity, graph analysis and practical evaluation in one answer.
- Marks are for the method (gradient × A) and the specific improvements — not 'be careful'.
ρ = gradient × cross-sectional area; average the diameter, control temperature. Method + improvement.
Common Edexcel mistakes
- Answering 'determine' with a description — it wants a calculated value with working.
- Underestimating Paper 3's stamina demand — 150 minutes of synoptic questions.
- Data-analysis answers that describe the graph instead of extracting the physics.
- Explanation answers with equations only — the mechanism in words carries the mark.
- Ignoring the practical thread — methods and uncertainties run through all three papers.
Your Edexcel checklist
- I have sat at least two full 2h30 Paper 3s under timed conditions.
- I know what each command word demands — determine, explain, show that, evaluate.
- I can analyse an unfamiliar experiment's data — gradients, uncertainties, method criticism.
- I can derive the key equations, not just quote them.
- I have revised the practical methods as examinable content.
- I have read the Edexcel examiner reports for all three papers.
Paper 3's synoptic reach is the thing hardest to train alone — the connections have to exist before the question asks for them. Ask Lumi to question you across the topics: 'how does what you know about energy connect to what you know about fields?' That is the paper's real demand.
What to take from this
- Paper 1 = mechanics/materials/waves/electricity/further mechanics; Paper 2 = fields/particles/nuclear.
- Paper 3 is synoptic — 120 marks, 2h30, 40% of the grade — and rewards connections.
- Edexcel command words are enforced precisely: 'determine' means calculate, 'explain' means mechanism.
- At least 40% of marks are maths; practical questions run through all papers.
- *-marked questions assess the logical structure of extended answers.
Questions people also ask
Two and a half hours — 150 minutes for 120 marks, making it the longest physics exam of the three boards. Stamina is a real factor; practise it at full length.
Synoptic content from the whole course with a strong practical emphasis — unfamiliar experiments, data analysis, method evaluation, and questions that connect topics. There is no fixed topic list.
Calculate a value with full working — it is a stronger instruction than 'calculate', implying a specific answer exists and your method must reach it. A bare answer scores little.
Same content. Edexcel's challenge is Paper 3's length and synoptic demands; AQA's is the MCQ sections and option topic. Students with strong stamina often prefer Edexcel.