Physics

A Level Physics — Course Overview

A Level Physics is the study of the fundamental laws governing the universe, from the subatomic Scale to the cosmological. The course develops mathematical modelling skills, experimental Technique, and the ability to reason from first principles.

Board Coverage

Topic	AQA	Edexcel	OCR (A)	CIE (9702)
Measurements & Uncertainties	Paper 1	CP1	Paper 1	P1
Mechanics & Materials	Paper 1	CP1, CP2	Paper 1	P2
Waves	Paper 2	CP2	Paper 2	P2
Electricity	Paper 1	CP2	Paper 2	P2
Thermal Physics	Paper 2	CP3	Paper 2	P2
Fields (Gravitational & Electric)	Paper 2	CP3	Paper 2	P4
Nuclear & Quantum Physics	Paper 2	CP3	Paper 2	P4
Astrophysics (Optional)	Paper 2	CP5	Paper 2	—
Particle Physics	Paper 1	CP1	Paper 1	—

Course Structure

Core Modules

1. Mechanics — Kinematics, dynamics, energy, momentum, and circular motion
2. Waves — Progressive and stationary waves, interference, diffraction, and the wave-particle duality
3. Electricity — Current, resistance, DC circuits, and electromagnetism
4. Fields — Gravitational fields, electric fields, magnetic fields, and their unification
5. Thermal Physics — Kinetic theory, ideal gas laws, and thermodynamic processes
6. Nuclear & Quantum Physics — Radioactivity, nuclear decay, energy levels, and photoelectricity
7. Astrophysics — Stellar evolution, cosmology, and observational astronomy (optional on some boards)

Assessment

Board	Papers	Format
AQA	Paper 1, 2, 3	Written + practical endorsement
Edexcel	CP1–CP6	Written + practical endorsement
OCR (A)	Paper 1, 2, 3	Written + practical endorsement
CIE	Paper 1–4	Written + practical exam (P5)

All boards require a practical skills endorsement (pass/fail), assessed either through a portfolio (AQA, Edexcel, OCR) or a dedicated practical paper (CIE).

How to Use These Notes

Each topic page follows a consistent structure:

1. Physical principles — the underlying laws and their mathematical formulation
2. Derivations — where key results come from, not just what they are
3. Worked examples — applying principles to progressively harder problems
4. Intuition — physical reasoning that makes the maths feel natural
5. Multi-step problem set — exam-style questions requiring chain reasoning
6. Board-specific notes — specification differences highlighted

When finished, attempt the to identify gaps.

Common Pitfalls

1. Confusing scalar and vector quantities — always check whether direction matters for the quantity in question.

2. Neglecting air resistance or assuming ideal conditions when the question specifies a real-world scenario.

3. Forgetting to include units in final answers, especially when working with derived units like $\text{N}\,\text{kg}^{-1}\,\text{m}^2$.

4. Using the wrong equation from the data sheet — take time to read the full equation, including conditions and variable definitions.

Key Exam Board Differences

Aspect	AQA	OCR (A)	CIE (9702)
Practical	12 required activities (endorsement)	Practical endorsement (PAGs)	Paper 5 practical exam
Data Sheet	Full formula booklet provided	Full formula booklet provided	Limited formula list
Multiple Choice	Paper 1 (60 marks)	Paper 1 (70 marks)	Paper 1 (40 marks)
Calculators	Permitted in all papers	Permitted in all papers	Permitted except Paper 1

Key Formulae

Topic	Formula
Kinematics	$v^2 = u^2 + 2as$
Force	$F = ma$, Weight $W = mg$
Energy	$E_k = \frac{1}{2}mv^2$, $E_p = mgh$
Waves	$v = f\lambda$, $T = \frac{1}{f}$
Coulomb	$F = \frac{q_1 q_2}{4\pi\varepsilon_0 r^2}$
Gravitational	$F = \frac{GMm}{r^2}$, $g = \frac{GM}{r^2}$

Study Strategy

1. Learn derivations — examiners test whether you understand where formulae come from, not just how to plug in numbers.
2. Show all working — method marks are the majority of the total; a wrong answer with correct method scores heavily.
3. Practise multi-step problems — real exam questions chain 3—4 concepts together.
4. Master uncertainties — every board tests error propagation and significant figures.
5. Draw diagrams — a clear force diagram, circuit diagram, or ray diagram often earns marks before any calculation.
6. Check your answer — verify units, order of magnitude, and physical reasonableness.

Key Prefixes

Prefix	Symbol	Value
giga	G	$10^9$
mega	M	$10^6$
kilo	k	$10^3$
milli	m	$10^{-3}$
micro	$\mu$	$10^{-6}$
nano	n	$10^{-9}$
pico	p	$10^{-12}$

Summary

The key principles covered in this topic are linked in the sub-pages above. Focus on understanding the definitions, applying the formulas or frameworks, and evaluating strengths and limitations of each approach.

Worked Examples

Worked examples demonstrating the application of key concepts are covered in the detailed sub-pages linked above.