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The Edexcel A-Level Physics qualification (9PH0) is assessed through three written examination papers. Each paper tests different content areas, carries a different weighting, and demands a different approach. Before you start revising content, you need to understand the structure of the assessment you are preparing for — because structure shapes strategy.
Paper 1 covers the topics from the first half of the course: mechanics, electric circuits, materials, and waves. These are the foundational topics of physics, and many students feel most comfortable with them because they were studied first. However, familiarity can breed complacency — students often underperform on Paper 1 because they assume the topics are straightforward and do not revise them as carefully as later material.
The paper includes a mixture of multiple-choice questions, short-answer questions, calculations, and extended-response questions. Expect mechanics problems involving SUVAT equations, Newton's laws, and energy conservation. Circuit questions will test your understanding of Kirchhoff's laws, potential dividers, and internal resistance. Materials questions cover stress, strain, and Young's modulus. Waves questions span interference, diffraction, standing waves, and the electromagnetic spectrum.
Start with the multiple-choice section and work through it methodically. For calculation questions, always write the equation you are using, substitute values with units, and present your final answer to an appropriate number of significant figures. For extended-response questions, plan your answer before writing.
graph TD
A["Start Paper 1"] --> B["Multiple Choice Section"]
B --> C["Read stem carefully"]
C --> D["Eliminate obviously wrong options"]
D --> E["Check remaining options against physics"]
E --> F["Short Answer & Calculations"]
F --> G["Write equation in symbols"]
G --> H["Substitute values WITH units"]
H --> I["Show rearrangement if needed"]
I --> J["Answer + units + sig figs"]
J --> K["Extended Response 6-mark"]
K --> L["Plan for 60 seconds"]
L --> M["Write structured answer with terminology"]
M --> N["Final 10 min: check units, sig figs, blanks"]
Paper 2 covers the second half of the specification: further mechanics (momentum, circular motion), electric and magnetic fields, nuclear and particle physics, and thermodynamics. These topics tend to be more abstract and mathematically demanding. Many students find fields and nuclear physics particularly challenging.
Expect questions on gravitational and electric field calculations, capacitor charge and discharge, electromagnetic induction, nuclear decay equations, and the standard model of particle physics. Thermodynamics questions will test your understanding of the ideal gas laws, internal energy, and specific heat capacity.
Paper 2 rewards students who are comfortable with multi-step calculations. Practise rearranging equations with several variables and working through problems that combine two or more concepts (for example, circular motion combined with gravitational fields for satellite orbits). Field questions often require you to choose between equations for uniform and radial fields — be sure you know when each applies.
| Topic | Common Pitfall | Exam Tip |
|---|---|---|
| Further mechanics | Forgetting momentum is a vector | Always state your positive direction |
| Gravitational fields | Mixing up g = GM/r² and V = -GM/r | Field strength uses 1/r², potential uses 1/r |
| Electric fields | Wrong equation for uniform vs radial | Parallel plates: E = V/d. Point charges: E = kQ/r² |
| Capacitors | Not converting μF to F | 1 μF = 10⁻⁶ F — always convert before substituting |
| Nuclear physics | Confusing mass number and atomic number | Mass number (top) = protons + neutrons |
| Thermodynamics | Using °C instead of K | Gas law equations always need kelvin |
Paper 3 is the longest and most challenging paper. It can draw on content from anywhere in the specification and includes questions that test practical skills in a written context. You will not perform experiments in the exam, but you will need to describe procedures, identify variables, calculate uncertainties, evaluate methods, and suggest improvements.
Paper 3 also includes synoptic questions that link different topic areas. For example, a question might combine energy conservation from mechanics with electric field calculations from fields, or link wave properties with quantum physics.
Because Paper 3 covers everything, it is essential to have revised the full specification. Time management is critical: with 120 marks in 150 minutes, you have 1.25 minutes per mark. Do not spend too long on any single question. If you get stuck, move on and return to it later.
graph TD
A["Paper 3: 150 min, 120 marks"] --> B["Section A: Multiple choice"]
A --> C["Section B: Short & long answer"]
A --> D["Practical-based questions throughout"]
B --> E["~15 min allocation"]
C --> F["~125 min allocation"]
D --> G["Expect: describe procedure,\nidentify variables,\ncalculate uncertainties,\nevaluate methods"]
F --> H["Synoptic questions linking\nmultiple topic areas"]
H --> I["Example: energy conservation\n+ field calculations"]
| Feature | Paper 1 | Paper 2 | Paper 3 |
|---|---|---|---|
| Duration | 1 h 45 min | 1 h 45 min | 2 h 30 min |
| Total marks | 90 | 90 | 120 |
| Weighting | 30% | 30% | 40% |
| Minutes per mark | 1.17 | 1.17 | 1.25 |
| Content | Mechanics, circuits, materials, waves | Further mechanics, fields, nuclear, thermo | All topics + practical skills |
| Multiple choice | Yes | Yes | Yes |
| Extended response | Yes | Yes | Yes |
| Practical questions | Limited | Limited | Extensive |
| Synoptic questions | No | Limited | Yes |
Use these figures to calculate how long you should spend on each question. A 5-mark question in Paper 1 deserves approximately 6 minutes. A 6-mark extended response in Paper 3 deserves approximately 7–8 minutes. Discipline with time allocation is one of the simplest ways to improve your overall grade.
All three papers assess three objectives:
AO2 and AO3 together account for roughly 70% of the marks. This means rote memorisation alone is not sufficient — you must practise applying your knowledge to unfamiliar problems and analysing experimental data.
The data sheet provided in every exam contains selected equations and physical constants. Knowing exactly what is on it — and what is not — prevents wasted revision time and avoids exam panic.
| Given on data sheet | Must be memorised |
|---|---|
| E = hf | All SUVAT equations |
| λ = h/p (de Broglie) | v = fλ |
| Coulomb's law: F = kQ₁Q₂/r² | Ohm's law: V = IR |
| Gravitational field: g = GM/r² | Resistors in series and parallel |
| Capacitor energy: E = ½CV² | Kinetic energy: Ek = ½mv² |
| Radioactive decay: N = N₀e^(−λt) | GPE near surface: Ep = mgh |
| Ideal gas: pV = nRT | Power: P = IV = I²R = V²/R |
| Constants (c, h, e, G, k, etc.) | Definitions of field strength, potential, etc. |
Practise without the data sheet to find out which equations you genuinely have memorised and which you have been unconsciously relying on having in front of you.