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Edexcel · Revision notes

Physics

Cambridge AS & A Level Physics

Physical Quantities & Units

SI base and derived units, homogeneity of equations, prefixes, scalars and vectors, and the treatment of errors and uncertainties.

15 min read →

Kinematics

Displacement, velocity and acceleration; motion graphs; the equations of uniformly accelerated motion; free fall and projectile motion.

15 min read →

Dynamics — Newton's Laws & Momentum

Newton's three laws, mass and weight, linear momentum, impulse and the conservation of momentum in elastic and inelastic collisions.

16 min read →

Forces, Density & Pressure

Types of force, moments and couples, the principle of moments, equilibrium of coplanar forces, centre of gravity, density and fluid pressure.

14 min read →

Work, Energy & Power

Work done by a force, kinetic and gravitational potential energy, conservation of energy, efficiency and power.

13 min read →

Deformation of Solids

Tensile and compressive forces, Hooke's law and the spring constant, stress, strain and the Young modulus, and elastic strain energy.

13 min read →

Waves

Progressive waves, wave terminology, the wave equation, transverse and longitudinal waves, intensity, the electromagnetic spectrum, polarisation and the Doppler effect.

15 min read →

Superposition

The principle of superposition, interference and coherence, the double-slit experiment, diffraction gratings, and stationary waves.

15 min read →

Electric Current, Resistance & D.C. Circuits

Charge and current, potential difference and e.m.f., resistance and Ohm's law, resistivity, I–V characteristics, Kirchhoff's laws and potential dividers.

16 min read →

Particle & Nuclear Physics

The nuclear atom and the alpha-scattering experiment, nucleon and proton numbers, isotopes, the four fundamental forces, quarks, leptons and beta decay.

14 min read →

Motion in a Circle

Radians and angular speed, centripetal acceleration and force, and examples of circular motion.

13 min read →

Gravitational Fields

Newton's law of gravitation, gravitational field strength, gravitational potential, and orbital motion of satellites.

14 min read →

Oscillations (Simple Harmonic Motion)

Simple harmonic motion, the defining equation, displacement-velocity-acceleration relationships, energy in SHM, and damping and resonance.

15 min read →

Thermal Physics & Ideal Gases

Internal energy, temperature scales, specific heat capacity and latent heat, the ideal gas law, and the kinetic theory of gases.

15 min read →

Electric Fields & Capacitance

Electric field strength and Coulomb's law, electric potential, uniform fields, capacitance and energy stored, and capacitors in series and parallel.

15 min read →

Magnetic Fields & Electromagnetic Induction

Magnetic flux density and the force on a current and a moving charge, fields around currents, magnetic flux, and Faraday's and Lenz's laws of induction.

16 min read →

Quantum Physics & Nuclear Decay

The photon and photoelectric effect, wave–particle duality, energy levels and line spectra, mass–energy equivalence and binding energy, and radioactive decay.

16 min read →