AQA A-Level Physics Paper 3 (3BC), June 2025

Every question from AQA A-Level Physics Paper 3 (3BC), June 2025 (7408): 4 questions, 35 marks, each with its mark scheme and topic.

Question 1 8 marks
Calculate kinematic quantities, angular impulse, and compare angular deceleration from a disc brake system to electrical braking for an electric motor rotor.
Optional topics · 3.11 Engineering physics (A-level only)
Question 2 7 marks
Derive the formula for the linear velocity of a rolling object from energy conservation, explain the effect of mass distribution on moment of inertia, and deduce the order four rolling objects reach the bottom of an incline.
Optional topics · 3.11 Engineering physics (A-level only)
Question 3 15 marks
Analyze a three-process thermodynamic cycle on a p–V diagram by determining the amount of gas, work done, values of Q, W, and ΔU, and evaluating engine efficiency and practicality.
Physics · Optional topics · 3.6 Further mechanics and thermal physics (A-level only) · 3.11 Engineering physics (A-level only)
Question 4 5 marks
Define the coefficient of performance of a heat pump, evaluate claims regarding COP variation with outside temperature, and calculate the electrical energy required for heating.
Optional topics · 3.11 Engineering physics (A-level only)