📝 OCR A Physics Paper 3 prep guide — last-minute revision, hints & synoptic topics

OCR A Level Physics revision, practice and AI feedback built by teachers

PhysicsUK helps A Level Physics pupils revise OCR A topics, practise exam-style questions, receive instant feedback, and strengthen written explanations.

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Moving up a stage? Browse the OCR A & AQA transition guides (GCSE to AS and AS to A Level). Looking for revision routes? Start with OCR A Level Physics revision, A Level Physics MCQ practice, or A Level Physics problem solving practice.

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AS · Work, energy & power (M3)

A garden fountain pump draws a steady electrical power of 200 W and raises water to a spout 10 m above the reservoir. When running, the flow reaches a steady value. If only 50% of the input power goes into increasing the water’s gravitational energy (the rest is lost as heating and turbulence), which value is closest to the maximum steady volume flow rate at the spout? Assume 1 litre of water has a mass of 1.0 kg.

A2 · AC generators & transformers (Module 6.3): efficiency and current/voltage ratios

In a school lab, a 12 V (rms) AC supply feeds an 80% efficient step-up transformer that provides 120 V (rms) to a small neon sign. The primary current is 2.0 A (rms). What is the secondary current (rms)?

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