Free interactive tools for GCSE physics. Each one gives you a new question every time, marks your answer instantly and shows a step-by-step worked solution. They work on phones, tablets and computers, and suit AQA, Edexcel, OCR and Eduqas GCSE Physics and Combined Science.
Rearranging physics equations
Practise rearranging 13 GCSE physics equations, from v = s ÷ t to Ek = ½mv² and ΔE = mcΔθ. If you divide the wrong way round or forget a square root, it tells you exactly what went wrong. Each equation is tagged with whether you must learn it for AQA or it is given on the equation sheet.
Physics unit conversions
Convert the units that cost marks in GCSE physics exams: prefixes like kJ, MW, mA and µs, cm³ to m³, hours to seconds, km/h to m/s and kWh to joules. It spots common slips, such as using the length factor for an area or volume conversion.
Distance–time and velocity–time graphs
Read motion graphs the way the exam asks: speed from the gradient of a distance–time graph, acceleration from a velocity–time graph, and distance travelled from the area under the line. A new graph is drawn every time, and the worked solution shows the gradient triangle or shaded area on the graph.
Series and parallel circuit calculations
Work out current, potential difference and resistance in a new circuit diagram every time. It covers the series and parallel rules GCSE physics students mix up most, like sharing the supply p.d. in series and adding branch currents in parallel, and highlights the parts of the circuit you need in the worked solution.
Hooke’s law and force–extension graphs
Find the spring constant from the gradient, read forces off the graph, calculate elastic potential energy with E = ½ke², and spot the limit of proportionality. Harder questions use extension in cm, so you have to convert to metres first, just like in the exam.
Half-life graphs
Read radioactive decay curves: find the half-life, the activity after a set time, how long it takes to fall to a given activity, and the percentage left. The worked solution draws the reading lines onto the curve.
Half-life calculations and radioactive dating
How much is left after so many days or half-lives, how long until a sample is safe, and how to date bones with carbon-14 and rocks from parent–daughter ratios. Harder questions add background radiation and counts per gram, and every step is linked to a clear rule.
Want more GCSE physics practice? Try the AQA GCSE equation sheet and practice or the GCSE physics quizzes.