3 (a) A torch (flashlight) contains four cells, a lamp and a switch connected in series. (i) Draw a circuit diagram for the torch using standard electrical symbols. [3] (ii) The potential difference (p.d.) across the lamp is 6.0 V when the switch is closed. The resistance of the lamp is 5.0 Ω when lit. Calculate the current in the lamp. current = …A [2] (iii) Two lamps each of resistance 5.0 Ω are connected together in a series circuit. Calculate the combined resistance of the two lamps in series. resistance = … Ω [1] (b) Choose words from the list to complete the sentences to describe the energy transfers that occur when the torch is switched on. You may use each word once, more than once or not at all. chemical elastic electrical gravitational light nuclear sound thermal The energy stored in the cells is … potential energy. This energy is transferred into … energy which passes through the lamp. The useful energy from the lamp is … energy. Some energy is wasted as … energy. [3] (c) Solar energy is sometimes used to power torches. Solar energy is a renewable energy resource. State two other renewable energy resources. 1 … 2 … [2] (d) Fig. 3.1 shows a ray of light from a torch shining on a mirror. X Z Fig. 3.1 (i) State the name of line XZ. … [1] (ii) State what happens to the ray of light at point X on Fig. 3.1. … [1] [Total: 13]

3(a)(i) all symbols correct ; 4 cells shown (or battery symbol) ; all in series; 3 3(a)(ii) current = voltage / resistance or 6 / 5 ; = 1.2 (A) ; 2 3(a)(iii) 10.0 (Ω) ; 1 3(b) chemical electrical light thermal ;;; 3 3(c) tidal ; geothermal ; HEP ; wind ; wave ; max 2 2 3(d)(i) normal ; 1 3(d)(ii) reflection ; 1 (a)(i) To earn these three marks, you must draw a circuit diagram with all symbols correct, show four cells (or a battery symbol), and ensure all components are connected in series. (a)(ii) To earn these two marks, you must show the calculation for current as voltage/resistance (6/5) and state the correct answer of 1.2 A. (a)(iii) To earn this mark, you must correctly state the combined resistance as 10.0 Ω. (b) To earn these three marks, you must correctly fill in the blanks with 'chemical', 'electrical', 'light', and 'thermal' in the correct order. (c) To earn these two marks, you must state any two different renewable energy resources from the list provided (e.g., tidal, geothermal, HEP, wind, wave). (d)(i) To earn this mark, you must identify the line as the 'normal'. (d)(ii) To earn this mark, you must identify the phenomenon as 'reflection'.

3 (a) A torch (flashlight) contains four cells, a lamp and a switch connected in series. (i) Draw a circuit diagram for the torch using standard electrical symbols. [3] (ii) The potential difference (p.d.) across the lamp is 6.0 V when the switch is closed. The resistance of the lamp is 5.0 Ω when lit. Calculate the current in the lamp. current = …A [2] (iii) Two lamps each of resistance 5.0 Ω are connected together in a series circuit. Calculate the combined resistance of the two lamps in series. resistance = … Ω [1] (b) Choose words from the list to complete the sentences to describe the energy transfers that occur when the torch is switched on. You may use each word once, more than once or not at all. chemical elastic electrical gravitational light nuclear sound thermal The energy stored in the cells is … potential energy. This energy is transferred into … energy which passes through the lamp. The useful energy from the lamp is … energy. Some energy is wasted as … energy. [3] (c) Solar energy is sometimes used to power torches. Solar energy is a renewable energy resource. State two other renewable energy resources. 1 … 2 … [2] (d) Fig. 3.1 shows a ray of light from a torch shining on a mirror. X Z Fig. 3.1 (i) State the name of line XZ. … [1] (ii) State what happens to the ray of light at point X on Fig. 3.1. … [1] [Total: 13]

3(a)(i) all symbols correct ; 4 cells shown (or battery symbol) ; all in series; 3 3(a)(ii) current = voltage / resistance or 6 / 5 ; = 1.2 (A) ; 2 3(a)(iii) 10.0 (Ω) ; 1 3(b) chemical electrical light thermal ;;; 3 3(c) tidal ; geothermal ; HEP ; wind ; wave ; max 2 2 3(d)(i) normal ; 1 3(d)(ii) reflection ; 1 (a)(i) To earn these three marks, you must draw a circuit diagram with all standard symbols correct, show four cells (or a battery symbol), and ensure all components are connected in series. (a)(ii) To earn these two marks, you must show the calculation using the formula current = voltage / resistance (6/5) and state the correct answer of 1.2 A. (a)(iii) To earn this mark, you must state the combined resistance as 10.0 Ω. (b) To earn these three marks, you must correctly fill in the blanks with 'chemical', 'electrical', 'light', and 'thermal' in the correct order. (c) To earn these two marks, you must state two different renewable energy resources from the list provided, such as tidal, geothermal, HEP, wind, or wave. (d)(i) To earn this mark, you must identify the line as the 'normal'. (d)(ii) To earn this mark, you must identify the phenomenon as 'reflection'.

3 (a) A student constructs a circuit containing two lamps in parallel connected across two cells in series. Each lamp is controlled by a separate switch. (i) Draw a circuit diagram for this circuit using standard electrical symbols. [3] (ii) State one advantage of connecting the lamps in parallel rather than in series. … … [1] (b) Fig. 3.1 shows a filament lamp. glass bulb, filled with gas filament metal base Fig. 3.1 (i) When the lamp is switched on, thermal energy is transferred from the filament through the metal base. Name the process that transfers the thermal energy. … [1] (ii) Suggest one part of the electromagnetic spectrum emitted by the lamp. … [1] (c) Fig. 3.2 shows a ray of light from the lamp passing through a rectangular glass block. Fig. 3.2 (i) On Fig. 3.2, label the angle of incidence with the letter i and the angle of refraction with the letter r. [2] (ii) Explain why the ray of light changes direction as it is refracted through the glass block. … … [1] [Total: 9]

3(a)(i) all symbols correct ; lamps in parallel ; both switches in correct place ; 3 3(a)(ii) if one lamp fails the other will still light / so both lamps get the full battery voltage ; 1 3(b)(i) conduction ; 1 3(b)(ii) visible light / infrared ; 1 3(c)(i) i positioned between incident ray and normal ; r positioned between refracted ray and normal ; 2 3(c)(ii) change of speed ; 1 (a)(i) To earn these marks, you must draw all symbols correctly, show the lamps connected in parallel, and place both switches in the correct positions. (a)(ii) You need to state one advantage, such as if one lamp fails the other will still light, or that both lamps receive the full battery voltage. (b)(i) This mark is awarded for correctly naming 'conduction' as the process of thermal energy transfer. (b)(ii) You must suggest either 'visible light' or 'infrared' as a part of the electromagnetic spectrum emitted. (c)(i) You earn these marks by correctly labeling 'i' between the incident ray and the normal, and 'r' between the refracted ray and the normal. (c)(ii) This mark is awarded for explaining that the change in direction is due to a change of speed.

3 (a) Fig. 3.1 shows water in a saucepan on an electric cooker. heat cooker water saucepan Fig. 3.1 State the process that transfers thermal energy through the base of the saucepan. … [1] (b) The temperature of the water is recorded as the saucepan is heated. Fig. 3.2 shows a graph of the results. 0 0 1 2 3 4 5 time / minutes 6 7 8 9 10 20 40 60 80 temperature / °C 100 110 10 30 50 70 90 Fig. 3.2 (i) State the temperature rise over the first 2 minutes. … °C [1] (ii) State how the graph shows that the water boils at 100 °C. … … … [1] (c) (i) The saucepan is made from steel. State one difference between the magnetic properties of steel and the magnetic properties of soft iron. … … … [1] (ii) The mass of steel used to make the saucepan is 900 g. The volume of the steel is 115 cm3. Calculate the density of the steel used to make the saucepan. State the units of your answer. density = … units … [3] (d) When the base of the steel saucepan is heated, the steel expands. (i) State one example where the thermal expansion of a material is useful. … … [1] (ii) State one example where the thermal expansion of a material is a problem. … … [1] [Total: 9]

3(a)(i) conduction ; 1 3(b)(i) 38 °C ; 1 3(b)(ii) temperature stops increasing ; 1 3(c)(i) (soft) iron is magnetised quickly / steel is magnetised slowly ; or (soft) iron loses its magnetism quickly / steel loses magnetism slowly ; 1 3(c)(ii) density = mass ÷ volume or mass value ÷ volume value or 900 ÷ 115 ; 7.83 ; g / cm3 ; 3 3(d)(i) (liquid in glass) thermometers / bimetallic strips ; 1 3(d)(ii) bridges / roads / overhead electricity cables etc. ; 1 (a)(i) To earn this mark, you must state 'conduction' as the process of thermal energy transfer. (b)(i) To earn this mark, you must correctly read the temperature rise from the graph for the first 2 minutes. (b)(ii) To earn this mark, you must state that the temperature stops increasing at 100 °C, indicating boiling. (c)(i) To earn this mark, you must state a correct difference in magnetic properties, such as soft iron magnetizing/demagnetizing quickly, while steel does so slowly. (c)(ii) To earn the first mark, you must show the correct formula for density or substitute the given mass and volume values. To earn the second mark, you must calculate the correct numerical value for density. To earn the third mark, you must state the correct units for density. (d)(i) To earn this mark, you must name a device used to measure temperature, such as a thermometer or bimetallic strip. (d)(ii) To earn this mark, you must provide a correct example of where thermal expansion is accounted for, such as in bridges or roads.

Cambridge IGCSE Co-ordinated Sciences · 0654

IGCSE Co-ordinated Sciences (0654) Electricity and magnetism past paper questions

Revise IGCSE Co-ordinated Sciences (0654) — Electricity and magnetism with real Cambridge past-paper questions grouped by topic, each shown with its marking scheme. Working one topic at a time targets exactly the skill each question tests.

356 free questions from 2016–2021, each with its marking scheme. Open the full topical bank to filter by subtopic, paper, and year.

Electricity and magnetism in IGCSE Co-ordinated Sciences 0654 exams, 2020–2025

Across 2020–2025, Electricity and magnetism accounted for 501 questions worth 2,144 marks in Cambridge IGCSE Co-ordinated Sciences (0654) papers.

By year
Year	Questions	Marks
2020	78	323
2021	82	330
2022	86	348
2023	88	368
2024	101	477
2025	66	298

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Paper 1 · 162 qs
Paper 2 · 165 qs
Paper 3 · 72 qs
Paper 4 · 71 qs
Paper 5 · 13 qs
Paper 6 · 18 qs

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2021 May/Jun · Paper 3 · Q3 · 13 marks
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2021 May/Jun · Paper 3 · Q3 · 13 marks
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2021 Oct/Nov · Paper 3 · Q3 · 9 marks
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2021 Oct/Nov · Paper 3 · Q3 · 9 marks
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2021 Oct/Nov · Paper 1 · Q34 · 1 mark
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Mark scheme — 2021 Paper 1 Q34
Answer: A
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