A complete guide to OCR A-Level Physics

OCR A-Level Physics A (specification H556) is one of the two A-Level physics routes offered by OCR. It is a linear two-year course assessed across three written papers at the end of Year 13, plus a Pass or Not Classified practical endorsement run by your teachers. The qualification is built around six modules that move from foundations through to cosmology.

This guide walks through each paper, the content of each module, how the 12 Practical Activity Groups appear in the exam, and the revision techniques that lift OCR physics grades. If you are deciding between OCR Physics A (H556) and OCR Physics B Advancing Physics (H557), this guide covers Physics A, the more widely taught of the two.

OCR Physics A is a linear qualification, so everything you have learned over Year 12 and Year 13 is assessed at the end of Year 13. There is no coursework that contributes to your grade. The three papers test recall, application to unfamiliar contexts, and analysis of practical and quantitative data.

Papers 1 and 2 are content-led, drawing on the six modules from different angles. Paper 3 (Unified physics) is the synoptic paper and pulls from across the whole specification.

Each paper mixes short structured questions, longer extended responses, and a high proportion of calculation questions. Paper 3 places special weight on linking ideas from different modules in one answer.

Paper 1 (Modelling physics) covers Modules 1, 2, 3 and 5. The focus is the foundational quantitative content: Mechanics, materials, waves, and the abstract field and SHM models used in higher-level physics.

Module 1 is not a separate content module but a thread that runs through the whole specification. It covers planning, implementing, analysing, and evaluating practical work. Questions testing Module 1 appear on every paper.

Physical quantities, units, scalars and vectors, measurement and uncertainty. This module underpins every calculation in every other module.

Motion (equations of motion, projectile motion), forces in action (Newton's laws, drag, terminal velocity), work, energy and power, materials (Hooke's law, Young's modulus, stress and strain), Newton's laws of motion and momentum (including collisions in 1D and 2D).

Thermal physics (specific heat capacity, latent heat, ideal gases, kinetic theory), circular motion, oscillations (SHM, damping, resonance), gravitational fields (force, potential, satellites and Kepler's laws), and astrophysics (stars, the HR diagram, cosmology, the Doppler effect, Hubble's law, the Big Bang).

Paper 2 (Exploring physics) covers Modules 1, 2, 4 and 6. The focus is the experimental and electronic side of physics: Electricity, waves and quantum behaviour, electric and magnetic fields, capacitors, and nuclear and particle physics.

Charge and current, energy, power and resistance, electrical circuits (Kirchhoff's laws, potential dividers, EMF and internal resistance), waves (progressive and stationary), quantum physics (the photoelectric effect, energy levels, wave-particle duality).

Capacitors (charging, discharging, energy stored), electric fields (force, potential, parallel plates), electromagnetism (force on a wire, motion of charged particles, electromagnetic induction, transformers), nuclear and particle physics (radioactive decay, fission and fusion, the standard model), and medical imaging (X-rays, CT, ultrasound, PET scanning).

Paper 3 (Unified physics) is the synoptic paper. It can draw on any content from across the six modules and is designed to test your ability to link physics across topics. The paper is shorter (1h 30m) but worth 26% of the A-Level. It typically includes a mix of short structured questions, longer extended response items, and questions based on unfamiliar contexts or pieces of research.

Paper 3 includes substantial unfamiliar-data questions: A novel experimental setup, a graph you have not seen before, or a scenario where you have to apply physics to a real-world problem.

OCR A-Level Physics has 12 Practical Activity Groups (PAGs) that you complete over the two-year course. You do not perform them in the exam, but at least 15% of A-Level marks test practical skills (DfE subject content rule for A-Level sciences) – expect questions on methods, variables, safety, and the underlying physics of the PAGs across all three papers.

Alongside the three written papers you also receive a Pass or Not Classified on the practical endorsement. This is a separate assessment based on your teacher's judgement of your competence in lab work, against five Common Practical Assessment Criteria (CPAC). Some degree courses (engineering, physics, medicine) require a pass – check individual course pages.

Ofqual subject content requires at least 40% of A-Level physics marks to test mathematical skills at Level 2 (GCSE higher) or above. The maths content includes algebraic rearrangement, trigonometry, logarithms (essential for radioactive decay and capacitor discharge), exponential functions, basic calculus concepts (rate of change graphically), uncertainty propagation, and graph analysis (gradients, intercepts, log-log plots).

Most students who score an A or A* in A-Level physics also take A-Level maths. It is not formally required, but the speed and confidence that maths A-Level builds make a real grade-level difference. If you're not taking maths, a strong (8 or 9) GCSE maths grade makes the maths workload manageable.

A-Level physics is more about applying a small number of equations fluently than memorising a huge bank of content. Students who score A and A* drill the same equations in different contexts until they can spot which one to use under exam pressure.

You are given a data booklet with the standard equations. Drill yourself on what each one means, what each variable is, and what units it has. The students who lose marks are not the ones who forget the equation – they are the ones who pick the wrong equation under time pressure.

A-Level physics calculations are rarely one-step. A typical 5-mark question involves three or four sub-calculations that must be done in the right order with the right units. Past paper calculations under timed conditions are the single best preparation.

Gravitational fields, electric fields, and capacitors all share similar mathematical structures but apply with different signs and contexts. Build a one-page comparison table: Force law, field strength, potential, potential energy, equipotentials. Revisit it weekly. This is where A and A* students pull ahead.

Do not just memorise each method. Learn the variables, the controls, the percentage uncertainty calculation, and the graph you would plot. Past paper PAG questions are some of the most predictable mark-grabbers in the whole course.

Doing a past paper and putting it back on the shelf is wasted work. Mark it honestly, write down every topic where you lost marks, and revise that specific content before doing another paper. The biggest jumps in physics scores come from fixing recurring weaknesses, not from doing more papers.