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

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

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

Built for OCR A (H556) & AQA (7408) Teacher-written explanations Worked examples and misconceptions Interactive simulations AI feedback for written answers

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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 · DC Circuits (M4)

In a lab test, a bench power supply is set to 6.0 V and connected to a resistor using long, thin leads. The current is 0.50 A. A voltmeter across just the resistor reads 5.8 V. Which statement must be true about the energy transfer per coulomb in this circuit?

A2 · Energy & power in DC circuits

A 3.0 V head torch originally uses a 0.60 W filament bulb. It is upgraded to a 1.2 W LED module, still powered by the same 3.0 V battery pack. For a continuous 30 min walk, which value is closest to the extra electrical energy taken from the battery by the LED compared with the original bulb?

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