Exercise 1 — IGCSE 0653 Mar 2023 Paper 32 Q9
Show mark scheme
parallel
Ohm's law: V = IR (voltage = current × resistance)Power: P = IV = I²R = V²/REnergy: E = IVt = PtSeries circuit: R_total = R₁ + R₂ + …Parallel circuit: 1/R_total = 1/R₁ + 1/R₂ + …Charge: Q = It (coulombs = amperes × seconds)Transformer: V₁/V₂ = N₁/N₂ (ideal: V₁I₁ = V₂I₂)118 Cambridge IGCSE 0653 Combined Sciences past paper questions on electricity & magnetism, across Theory, Multiple Choice and Alternative to Practical.
Electric circuits carry current driven by a potential difference. Ohm's law relates voltage, current and resistance. Magnetic fields are produced by current-carrying conductors, and electromagnetic induction underpins generators and transformers.
What's covered:
| Type | Level | Paper | Session | Q# | Marks | Answer / key |
|---|---|---|---|---|---|---|
| ATP | Core | Paper 52 | Mar 2023 | Q3 | 7 marks | top of spring < bottom of spring, both in mm |
| ATP | Core | Paper 51 | May/Jun 2024 | Q3 | 7 marks | values for h, w and l all recorded to 0.1 cm |
| ATP | Core | Paper 52 | May/Jun 2025 | Q3 | 7 marks | value of V |
| ATP | Extended | Paper 62 | Mar 2023 | Q3 | 7 marks | keep your eyes level with the, point being measured / top of the spring / avoid … |
| ATP | Extended | Paper 62 | Mar 2023 | Q4 | 7 marks | One mark from each section and any two other marking points: |
| ATP | Extended | Paper 62 | Mar 2024 | Q4 | 13 marks | correct symbol for voltmeter connected across the resistance wire |
| ATP | Extended | Paper 61 | May/Jun 2023 | Q4 | 13 marks | V = 2.6 (V) |
| ATP | Extended | Paper 61 | May/Jun 2024 | Q3 | 7 marks | h = 2.5 (cm) |
| ATP | Extended | Paper 61 | May/Jun 2024 | Q4 | 7 marks | One mark from each section and any two other marking points: |
| ATP | Extended | Paper 62 | May/Jun 2025 | Q3 | 7 marks | correct voltmeter symbol |
| MCQ | Core | Paper 12 | Mar 2023 | Q38 | 1 mark | C |
| MCQ | Core | Paper 12 | Mar 2023 | Q39 | 1 mark | B |
| MCQ | Core | Paper 12 | Mar 2024 | Q36 | 1 mark | C |
| MCQ | Core | Paper 12 | Mar 2024 | Q37 | 1 mark | D |
| MCQ | Core | Paper 12 | Mar 2024 | Q38 | 1 mark | B |
| MCQ | Core | Paper 12 | Mar 2024 | Q39 | 1 mark | D |
| MCQ | Core | Paper 12 | May/Jun 2023 | Q29 | 1 mark | C |
| MCQ | Core | Paper 12 | May/Jun 2023 | Q30 | 1 mark | C |
| MCQ | Core | Paper 12 | May/Jun 2023 | Q31 | 1 mark | B |
| MCQ | Core | Paper 12 | May/Jun 2023 | Q32 | 1 mark | D |
| MCQ | Core | Paper 12 | May/Jun 2023 | Q33 | 1 mark | C |
| MCQ | Core | Paper 13 | May/Jun 2023 | Q36 | 1 mark | A |
| MCQ | Core | Paper 11 | May/Jun 2023 | Q37 | 1 mark | A |
| MCQ | Core | Paper 12 | May/Jun 2023 | Q37 | 1 mark | D |
| MCQ | Core | Paper 13 | May/Jun 2023 | Q37 | 1 mark | B |
| MCQ | Core | Paper 11 | May/Jun 2023 | Q38 | 1 mark | D |
| MCQ | Core | Paper 12 | May/Jun 2023 | Q38 | 1 mark | D |
| MCQ | Core | Paper 13 | May/Jun 2023 | Q38 | 1 mark | B |
| MCQ | Core | Paper 11 | May/Jun 2023 | Q39 | 1 mark | A |
| MCQ | Core | Paper 12 | May/Jun 2023 | Q39 | 1 mark | A |
| MCQ | Core | Paper 13 | May/Jun 2023 | Q39 | 1 mark | D |
| MCQ | Core | Paper 11 | May/Jun 2024 | Q31 | 1 mark | A |
| MCQ | Core | Paper 11 | May/Jun 2024 | Q32 | 1 mark | D |
| MCQ | Core | Paper 11 | May/Jun 2024 | Q33 | 1 mark | A |
| MCQ | Core | Paper 13 | May/Jun 2024 | Q34 | 1 mark | A |
| MCQ | Core | Paper 13 | May/Jun 2024 | Q35 | 1 mark | A |
| MCQ | Core | Paper 13 | May/Jun 2024 | Q36 | 1 mark | C |
| MCQ | Core | Paper 11 | May/Jun 2024 | Q37 | 1 mark | B |
| MCQ | Core | Paper 13 | May/Jun 2024 | Q37 | 1 mark | C |
| MCQ | Core | Paper 11 | May/Jun 2024 | Q38 | 1 mark | B |
| MCQ | Core | Paper 13 | May/Jun 2024 | Q38 | 1 mark | B |
| MCQ | Core | Paper 11 | May/Jun 2024 | Q39 | 1 mark | D |
| MCQ | Core | Paper 13 | May/Jun 2024 | Q39 | 1 mark | D |
| MCQ | Core | Paper 13 | May/Jun 2025 | Q28 | 1 mark | A |
| MCQ | Core | Paper 13 | May/Jun 2025 | Q29 | 1 mark | A |
| MCQ | Core | Paper 13 | May/Jun 2025 | Q30 | 1 mark | C |
| MCQ | Core | Paper 11 | May/Jun 2025 | Q34 | 1 mark | B |
| MCQ | Core | Paper 11 | May/Jun 2025 | Q35 | 1 mark | C |
| MCQ | Core | Paper 11 | May/Jun 2025 | Q36 | 1 mark | D |
| MCQ | Core | Paper 11 | May/Jun 2025 | Q37 | 1 mark | D |
| MCQ | Core | Paper 11 | May/Jun 2025 | Q38 | 1 mark | D |
| MCQ | Core | Paper 11 | May/Jun 2025 | Q39 | 1 mark | C |
| MCQ | Core | Paper 11 | Oct/Nov 2023 | Q36 | 1 mark | C |
| MCQ | Core | Paper 11 | Oct/Nov 2023 | Q37 | 1 mark | C |
| MCQ | Core | Paper 12 | Oct/Nov 2023 | Q37 | 1 mark | D |
| MCQ | Core | Paper 13 | Oct/Nov 2023 | Q37 | 1 mark | D |
| MCQ | Core | Paper 11 | Oct/Nov 2023 | Q38 | 1 mark | D |
| MCQ | Core | Paper 12 | Oct/Nov 2023 | Q38 | 1 mark | C |
| MCQ | Core | Paper 13 | Oct/Nov 2023 | Q38 | 1 mark | C |
| MCQ | Core | Paper 11 | Oct/Nov 2023 | Q39 | 1 mark | B |
| MCQ | Core | Paper 12 | Oct/Nov 2023 | Q39 | 1 mark | C |
| MCQ | Core | Paper 13 | Oct/Nov 2023 | Q39 | 1 mark | C |
| MCQ | Extended | Paper 22 | Mar 2023 | Q37 | 1 mark | A |
| MCQ | Extended | Paper 22 | Mar 2023 | Q38 | 1 mark | B |
| MCQ | Extended | Paper 22 | Mar 2023 | Q39 | 1 mark | B |
| MCQ | Extended | Paper 22 | Mar 2024 | Q37 | 1 mark | C |
| MCQ | Extended | Paper 22 | Mar 2024 | Q38 | 1 mark | B |
| MCQ | Extended | Paper 22 | Mar 2024 | Q39 | 1 mark | B |
| MCQ | Extended | Paper 22 | May/Jun 2023 | Q31 | 1 mark | B |
| MCQ | Extended | Paper 22 | May/Jun 2023 | Q32 | 1 mark | A |
| MCQ | Extended | Paper 22 | May/Jun 2023 | Q33 | 1 mark | C |
| MCQ | Extended | Paper 22 | May/Jun 2023 | Q34 | 1 mark | B |
| MCQ | Extended | Paper 23 | May/Jun 2023 | Q36 | 1 mark | D |
| MCQ | Extended | Paper 21 | May/Jun 2023 | Q37 | 1 mark | B |
| MCQ | Extended | Paper 23 | May/Jun 2023 | Q37 | 1 mark | A |
| MCQ | Extended | Paper 21 | May/Jun 2023 | Q38 | 1 mark | A |
| MCQ | Extended | Paper 23 | May/Jun 2023 | Q38 | 1 mark | C |
| MCQ | Extended | Paper 21 | May/Jun 2023 | Q39 | 1 mark | C |
| MCQ | Extended | Paper 22 | May/Jun 2023 | Q39 | 1 mark | D |
| MCQ | Extended | Paper 23 | May/Jun 2023 | Q39 | 1 mark | B |
| MCQ | Extended | Paper 22 | May/Jun 2024 | Q28 | 1 mark | C |
| MCQ | Extended | Paper 22 | May/Jun 2024 | Q29 | 1 mark | D |
| MCQ | Extended | Paper 22 | May/Jun 2024 | Q30 | 1 mark | C |
| MCQ | Extended | Paper 22 | May/Jun 2024 | Q34 | 1 mark | B |
| MCQ | Extended | Paper 22 | May/Jun 2024 | Q35 | 1 mark | B |
| MCQ | Extended | Paper 22 | May/Jun 2024 | Q36 | 1 mark | D |
| MCQ | Extended | Paper 22 | May/Jun 2024 | Q37 | 1 mark | A |
| MCQ | Extended | Paper 21 | May/Jun 2024 | Q38 | 1 mark | B |
| MCQ | Extended | Paper 22 | May/Jun 2024 | Q38 | 1 mark | A |
| MCQ | Extended | Paper 21 | May/Jun 2024 | Q39 | 1 mark | A |
| MCQ | Extended | Paper 22 | May/Jun 2024 | Q39 | 1 mark | B |
| MCQ | Extended | Paper 21 | May/Jun 2025 | Q35 | 1 mark | B |
| MCQ | Extended | Paper 21 | May/Jun 2025 | Q36 | 1 mark | B |
| MCQ | Extended | Paper 21 | May/Jun 2025 | Q37 | 1 mark | B |
| MCQ | Extended | Paper 23 | May/Jun 2025 | Q37 | 1 mark | B |
| MCQ | Extended | Paper 23 | May/Jun 2025 | Q38 | 1 mark | A |
| MCQ | Extended | Paper 23 | May/Jun 2025 | Q39 | 1 mark | B |
| MCQ | Extended | Paper 22 | Oct/Nov 2023 | Q36 | 1 mark | D |
| MCQ | Extended | Paper 23 | Oct/Nov 2023 | Q36 | 1 mark | B |
| MCQ | Extended | Paper 21 | Oct/Nov 2023 | Q37 | 1 mark | A |
| MCQ | Extended | Paper 22 | Oct/Nov 2023 | Q37 | 1 mark | D |
| MCQ | Extended | Paper 23 | Oct/Nov 2023 | Q37 | 1 mark | D |
| MCQ | Extended | Paper 21 | Oct/Nov 2023 | Q38 | 1 mark | C |
| MCQ | Extended | Paper 22 | Oct/Nov 2023 | Q38 | 1 mark | B |
| MCQ | Extended | Paper 23 | Oct/Nov 2023 | Q38 | 1 mark | B |
| MCQ | Extended | Paper 21 | Oct/Nov 2023 | Q39 | 1 mark | D |
| MCQ | Extended | Paper 22 | Oct/Nov 2023 | Q39 | 1 mark | B |
| MCQ | Extended | Paper 23 | Oct/Nov 2023 | Q39 | 1 mark | C |
| Theory | Core | Paper 32 | Mar 2023 | Q9 | 8 marks | parallel |
| Theory | Core | Paper 32 | Mar 2024 | Q9 | 7 marks | electromagnetic |
| Theory | Core | Paper 33 | May/Jun 2023 | Q6 | 10 marks | parallel |
| Theory | Core | Paper 32 | May/Jun 2023 | Q9 | 8 marks | resistance = voltage current (in any form) / (R) = 9 1.5 |
| Theory | Core | Paper 31 | Oct/Nov 2023 | Q6 | 9 marks | current |
| Theory | Extended | Paper 42 | Mar 2023 | Q9 | 10 marks | series |
| Theory | Extended | Paper 43 | May/Jun 2023 | Q6 | 9 marks | parallel |
| Theory | Extended | Paper 42 | May/Jun 2023 | Q9 | 6 marks | resistance = p.d. current (stated or evidence of use) / (R =) 6.0 0.75 |
| Theory | Extended | Paper 41 | May/Jun 2025 | Q9 | 10 marks | current in motor = 6.6 – 0.30 = 6.3 A |
| Theory | Extended | Paper 41 | Oct/Nov 2023 | Q3 | 7 marks | air resistance |