0654.P4.3.04 — Calculate the combined resistance of two or 7 Recall and use in calculations, the fact that: more resistors in series (a) . the sum of the c: past paper questions
Real questions on 0654.p4.3.04 — calculate the combined resistance of two or 7 recall and use in calculations, the fact that: more resistors in series (a) . the sum of the c
The newest 12 of 12 written questions. Open one to see it on the real paper.
- 0973/31 · May/June 2026 · Q11a(ii)[50]
(ii) Each hotplate has a resistance of 50. One value in the list is the correct value for the combined resistance of the two hotplates connected in parallel. Circle this value and explain your answer. 25Q 50Q 100Q 2500Q EOXPlAMAtION .......... .......... ..........
See it on the paper → - 0973/42 · May/June 2026 · Q11b(i)[3]
(i) Calculate the total resistance of the circuit. total resistanCe .......... [3]
See it on the paper → - 0973/41 · May/June 2025 · Q12b[2]
A 40 Ω resistor and a 20 Ω resistor are connected in parallel. Calculate the combined resistance of the two resistors. resistance = Ω
See it on the paper → - 0973/31 · May/June 2022 · Q3b(ii)[2]
The two speakers are connected in parallel. The combined resistance of the two speakers is one of the following values. 4 Ω 8 Ω 16 Ω 64 Ω State the correct value of the combined resistance. Explain your answer. resistance = Ω explanation
See it on the paper → - 0973/32 · May/June 2022 · Q12a[1]
During a journey, a car becomes positively charged with static electricity. State the name of the charged particles that have been removed from the car.
See it on the paper → - 0973/31 · October/November 2021 · Q9e(i)[1]
Calculate the combined resistance of the two lamps connected in series. resistance = Ω
See it on the paper → - 0973/32 · May/June 2020 · Q12b[2]
Fig. 12.2 shows a circuit with two resistors in parallel. 4 Ω 4 Ω Fig. 12.2 Identify, from the list, the most likely value of the combined resistance of the resistors in parallel. Explain your answer. 2 Ω 4 Ω 8 Ω 16 Ω value Ω explanation
See it on the paper → - 0973/41 · May/June 2020 · Q6e[2]
Two wires are connected in parallel. One wire has a resistance of 0.40 Ω. The other wire has a resistance of 0.60 Ω. Calculate the combined resistance of the two wires connected together in parallel. resistance = Ω
See it on the paper → - 0973/42 · May/June 2020 · Q3a(ii)[2]
Calculate the combined resistance of the two lamps connected in parallel. resistance = Ω
See it on the paper → - 0973/31 · May/June 2019 · Q3a(ii)[1]
The two resistors in the pump circuit have values of 4 Ω and 6 Ω. Calculate the combined resistance of the two resistors in series. resistance = Ω
See it on the paper → - 0973/31 · May/June 2019 · Q3a(iii)[2]
The potential difference across the resistors is 50 volts. Use your answer to (a)(ii) to calculate the current in the circuit. Show your working. current = A
See it on the paper → - 0973/42 · May/June 2019 · Q6a(i)[2]
Calculate the combined resistance of the two lamps connected in parallel in this circuit. Show your working. resistance = Ω
See it on the paper →
What examiners said
The most common error was that total resistance = 1/20 + 1/40. The inverse transformation step was frequently missing, so a final answer of 3/40 or 0.075 was commonly seen. 60 was also commonly seen.
— Examiner report, May/June 2025, 0973/41 Q12(b) (Cambridge)
The correct answer of 4 Ω was far less popular than 8 Ω or 16 Ω. Very few candidates were able to explain their answer.
— Examiner report, May/June 2022, 0973/31 Q3(b)(ii) (Cambridge)
Calculating the combined resistance of two resistors was completed correctly by many candidates.
— Examiner report, May/June 2019, 0973/31 Q3(a)(ii) (Cambridge)
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