Electrical circuits — Paper 2 · IGCSE Science - Combined 0653

39 The diagrams show four circuits. Which circuit can be used to find the resistance of resistor R? A B R R V A A V C D R A V R V A

1 marks

Answer: B

This question in 0653/22 Feb/March 2017

40 A 12 volt battery is connected to two resistors. Currents P, Q and R, and potential differences S and T across the two resistors are labelled. 12 volt R S P T Q Which row gives the relationship between the three currents, and gives the values of S and T ? currents S / volt T / volt A P = Q = R 6.0 6.0 B P = Q = R 12 12 C P + Q = R 6.0 6.0 D P + Q = R 12 12

1 marks

Answer: D

This question in 0653/22 Feb/March 2017

40 The diagram shows a circuit containing a battery and four resistors. One resistor is labelled R. Some values of p.d. and current are shown. 12 V 4.0 A 7.0 V R 2.0 V A 3.0 A What is the p.d. across resistor R, and what is the current in resistor R? p.d. / V current / A A 3.0 1.0 B 3.0 4.0 C 12 1.0 D 12 4.0

1 marks

Answer: A

This question in 0653/21 May/June 2017

39 A 12 V power supply is connected to a 6.0 Ω resistor. This causes a current in the resistor. How much thermal energy is produced in the resistor in 5.0 minutes? A 120 J B 600 J C 7200 J D 21 600 J

1 marks

Answer: C

This question in 0653/22 May/June 2017

40 The diagram shows a circuit containing four resistors and four ammeters. Which ammeter has the smallest reading? A A A D 10 Ω 40 Ω B 30 Ω A 20 Ω A C

1 marks

Answer: B

This question in 0653/22 May/June 2017

40 The diagram shows a circuit containing a battery, three resistors and four voltmeters. Which voltmeter has the greatest reading? V B A V V V D C

1 marks

Answer: A

This question in 0653/23 May/June 2017

40 The diagram shows a circuit containing a 12 V battery, four identical resistors, an ammeter and a voltmeter. Two values of current are shown. 12 V A 3.0 A 3.0 A V What is the reading on the ammeter and what is the reading on the voltmeter? reading on reading on ammeter / A voltmeter / V A 3.0 6.0 B 3.0 12 C 6.0 6.0 D 6.0 12

1 marks

Answer: C

This question in 0653/21 Oct/Nov 2017

39 The device Z in this circuit is designed to cut off the electricity supply automatically if too much current flows. Z What is device Z? A a fuse B a resistor C a switch D an ammeter

1 marks

Answer: A

This question in 0653/22 Oct/Nov 2017

40 The diagram shows three resistors connected to a 12 V battery. The current at two points in the circuit and the p.d. across one resistor are shown. Another resistor is labelled R. 12 V 3.0 A 3.0 V R 2.0 A What is the current in resistor R and what is the p.d. across resistor R? current in p.d. across resistor R / A resistor R / V A 1.0 3.0 B 1.0 9.0 C 2.0 3.0 D 2.0 9.0

1 marks

Answer: B

This question in 0653/22 Oct/Nov 2017

38 Which circuit is used to determine the resistance of the resistor R? A B V A R R A V C D V A R R V A

1 marks

Answer: B

This question in 0653/23 Oct/Nov 2017

40 The diagram shows a 12 V battery connected to a 2.0 Ω resistor, a 4.0 Ω resistor and resistor R. The current at two points in the circuit and the p.d. across the 2.0 Ω resistor are shown. 12 V 6.0 A R 2.0 Ω 2.0 A 4.0 Ω 6.0 V What is the current in resistor R and what is the p.d. across resistor R? current in p.d. across resistor R / A resistor R / V A 2.0 3.0 B 2.0 6.0 C 4.0 3.0 D 4.0 6.0

1 marks

Answer: D

This question in 0653/23 Oct/Nov 2017

40 The diagrams show four circuits, each containing an ammeter and two lamps with different resistances. Which circuit shows an ammeter with a reading equal to the current in each lamp? A B C D A A A A

1 marks

Answer: A

This question in 0653/22 Feb/March 2018

39 A lamp can be dimmed or switched off. Its circuit is protected by a fuse. Which diagram shows this circuit? A B C D

1 marks

Answer: A

This question in 0653/22 May/June 2018

40 The diagram shows three identical resistors R1, R2 and R3 connected to a battery. The current in R1 is I. The potential difference (p.d.) across R2 is V. I R1 R2 R3 V Which row gives the current in R3 and the p.d. across R3? current in R3 p.d. across R3 I V A 2 2 I B V 2 I V C 2 D I V

1 marks

Answer: B

This question in 0653/22 May/June 2018

39 A resistor is connected in a circuit as shown. A V The reading on the ammeter is 2.0 A and the reading on the voltmeter is 4.0 V. What is the power produced in the resistor? A 0.50 W B 2.0 W C 6.0 W D 8.0 W

1 marks

Answer: D

This question in 0653/23 May/June 2018

40 A circuit consists of two identical resistors, R1 and R2, and a battery. IB I1 R1 I2 R2 The current in the battery is IB. The current in R1 is I1 and the current in R2 is I2. How are IB, I1 and I2 related? A IB = I1 = I2 B IB > I1 and I1 = I2 C IB < I2 and I1 = I2 D IB > I1 > I2

1 marks

Answer: B

This question in 0653/23 May/June 2018

39 Three pieces of resistance wire X, Y and Z are made of the same metal. The diagram shows the lengths and the diameters of the wires. X Y Z l l d 2l 2d d What is the order of the wires when they are placed in order of increasing resistance, least resistance first? A Y → X → Z B Y → Z → X C Z → X → Y D Z → Y → X

1 marks

Answer: A

This question in 0653/21 Oct/Nov 2018

40 The diagram shows two 6.0 Ω resistors and one 12 Ω resistor connected in series to a power supply. The voltmeter connected across one 6.0 Ω resistor reads 2.0 V. power supply 6.0 Ω 6.0 Ω 12 Ω V What is the potential difference across the power supply? A 6.0 V B 8.0 V C 12 V D 48 V

1 marks

Answer: B

This question in 0653/22 Oct/Nov 2018

40 A student sets up the circuit shown in the diagram. The ammeter reads 0.60 A and the voltmeter reads 3.0 V. A 0.60 A V 3.0 V The student now takes two resistors that are identical to the original resistor. She connects them in series with the original resistor. A V What are the new readings on the ammeter and the voltmeter? ammeter / A voltmeter / V A 0.20 1.0 B 0.20 3.0 C 0.60 1.0 D 0.60 3.0

1 marks

Answer: A

This question in 0653/23 Oct/Nov 2018

37 A variable power supply is connected to a resistor and there is a current in the resistor. variable power supply current The potential difference across the resistor is decreased. The temperature of the resistor does not change. What happens to the current in the resistor and what happens to the resistance of the resistor? current resistance A decreases increases B decreases stays the same C increases decreases D increases stays the same

1 marks

Answer: B

This question in 0653/22 Feb/March 2019

38 The diagram shows a circuit with three switches P, Q and R. P Q R Which switches must be closed so that both lamps light? A P and Q only B P and R only C Q and R only D P, Q and R

1 marks

Answer: B

This question in 0653/22 Feb/March 2019

39 The diagram shows three identical lamps connected in series to a battery. Each lamp is labelled 0.60 V, 0.30 A. The lamps are working at normal brightness. What is the potential difference across the battery and the current in the battery? potential difference / V current / A A 0.60 0.30 B 0.60 0.90 C 1.80 0.30 D 1.80 0.90

1 marks

Answer: C

This question in 0653/22 Feb/March 2019

40 The diagram shows four 4.0 Ω resistors connected to a power supply. + – 4.0 Ω 4.0 Ω 4.0 Ω 4.0 Ω What is the resistance of the circuit? A 1.0 Ω B 2.0 Ω C 4.0 Ω D 16 Ω

1 marks

Answer: C

This question in 0653/22 Feb/March 2019

39 Three resistors, one of resistance 4.0 Ω and two of resistance 2.0 Ω, are connected in different arrangements. Which arrangement has a total resistance of 5.0 Ω? A B 2.0 Ω 2.0 Ω 4.0 Ω 2.0 Ω 2.0 Ω 4.0 Ω C D 2.0 Ω 2.0 Ω 2.0 Ω 2.0 Ω 4.0 Ω 4.0 Ω

1 marks

Answer: A

This question in 0653/21 May/June 2019

38 Three resistors, one resistor has resistance 4.0 Ω and two have resistance 2.0 Ω, are connected in different arrangements. Which arrangement has a total resistance of 5.0 Ω? A B 2.0 Ω 2.0 Ω 4.0 Ω 2.0 Ω 2.0 Ω 4.0 Ω C D 2.0 Ω 2.0 Ω 2.0 Ω 2.0 Ω 4.0 Ω 4.0 Ω

1 marks

Answer: A

This question in 0653/22 May/June 2019

39 Three resistors, one of resistance 4.0 Ω and two of resistance 2.0 Ω, are connected in different arrangements. Which arrangement has a total resistance of 5.0 Ω? A B 2.0 Ω 2.0 Ω 4.0 Ω 2.0 Ω 2.0 Ω 4.0 Ω C D 2.0 Ω 2.0 Ω 2.0 Ω 2.0 Ω 4.0 Ω 4.0 Ω

1 marks

Answer: A

This question in 0653/23 May/June 2019

36 A circuit contains a battery of e.m.f. E, two lamps and two voltmeters, connected as shown. The voltmeter readings V1 and V2, and the current in three parts of the circuit I, I1 and I2 are labelled. e.m.f. E reading = V1 I V I1 I2 V reading = V2 Which row gives expressions for current I and e.m.f. E? current I e.m.f. E A I = I1 = I2 E = V1 = V2 B I = I1 = I2 E = V1 + V2 C I = I1 + I2 E = V1 = V2 D I = I1 + I2 E = V1 + V2

1 marks

Answer: C

This question in 0653/21 Oct/Nov 2019

39 Four ammeters V, W, X and Y are connected in the circuit shown. V W A A Y X A A Which ammeters have the same reading as each other? A V and W only B V and Y only C X and Y only D V, W, X and Y

1 marks

Answer: D

This question in 0653/21 Oct/Nov 2019

39 Four ammeters V, W, X and Y are connected in the circuit shown. V W A A Y X A A Which ammeters have the same reading as each other? A V and W only B V and Y only C X and Y only D V, W, X and Y

1 marks

Answer: D

This question in 0653/22 Oct/Nov 2019

39 Four ammeters V, W, X and Y are connected in the circuit shown. V W A A Y X A A Which ammeters have the same reading as each other? A V and W only B V and Y only C X and Y only D V, W, X and Y

1 marks

Answer: D

This question in 0653/23 Oct/Nov 2019

38 In each of four circuits a lamp is connected to a battery using connecting wires that have resistance. The wires are all made from the same metal but have different lengths and thicknesses. The lamps are all identical and the batteries are all identical. In which circuit does the lamp shine most brightly? length of diameter of connecting connecting wires / cm wires / mm A 10 0.25 B 10 0.50 C 20 0.25 D 20 0.50

1 marks

Answer: B

This question in 0653/22 Feb/March 2020

39 The diagram shows a circuit containing four resistors and four ammeters. Which ammeter has the smallest reading? A A A D 10 Ω 40 Ω B 30 Ω A 20 Ω A C

1 marks

Answer: B

This question in 0653/22 Feb/March 2020

40 An electric oven is connected to the mains supply using insulated copper wires. The wires become very warm. Which change reduces the amount of heat produced in the connecting wires? A Use thicker copper wires. B Use thinner copper wires. C Use thicker insulation. D Use thinner insulation.

1 marks

Answer: A

This question in 0653/22 Feb/March 2020

39 A 12 V power supply is connected to a 6.0 Ω resistor. This causes a current in the resistor. How much thermal energy is produced in the resistor in 5.0 minutes? A 120 J B 600 J C 7200 J D 21 600 J

1 marks

Answer: C

This question in 0653/21 May/June 2020

38 An electric circuit contains two resistors connected to a cell. One resistor is labelled R. The switch is open. R The switch is now closed. What happens to the potential difference (p.d.) across resistor R and what happens to the current in resistor R? A The p.d. decreases and the current increases. B The p.d. decreases and the current remains the same. C The p.d. remains the same and the current increases. D The p.d. remains the same and the current remains the same.

1 marks

Answer: D

This question in 0653/22 May/June 2020

38 A power supply causes a current in a circuit. The electromotive force (e.m.f.) of the power supply and the resistance of the circuit are both changed. Which pair of changes must result in a smaller current in the circuit? e.m.f. resistance A decreased decreased B decreased increased C increased decreased D increased increased

1 marks

Answer: B

This question in 0653/21 Oct/Nov 2020

38 A power supply causes a current in a circuit. The electromotive force (e.m.f.) of the power supply and the resistance of the circuit are both changed. Which pair of changes must result in a smaller current in the circuit? e.m.f. resistance A decreased decreased B decreased increased C increased decreased D increased increased

1 marks

Answer: B

This question in 0653/22 Oct/Nov 2020

39 There is a current of 2.0 A in a 4.0  resistor for 20 s. What is the charge that flows through the resistor in this time and what is the p.d. across it? charge / C p.d. / V A 10 2.0 B 10 8.0 C 40 2.0 D 40 8.0

1 marks

Answer: D

This question in 0653/22 Oct/Nov 2020

38 A power supply causes a current in a circuit. The electromotive force (e.m.f.) of the power supply and the resistance of the circuit are both changed. Which pair of changes must result in a smaller current in the circuit? e.m.f. resistance A decreased decreased B decreased increased C increased decreased D increased increased

1 marks

Answer: B

This question in 0653/23 Oct/Nov 2020

38 A battery is connected to a resistor. current Which changes to the resistance of the resistor, and to the potential difference (p.d.) across the resistor, must produce a smaller current? resistance p.d. A decrease decrease B decrease increase C increase decrease D increase increase

1 marks

Answer: C

This question in 0653/22 Feb/March 2021

40 The diagrams show four arrangements of resistors. Which arrangement has the smallest total resistance? A B 4 Ω 2 Ω 2 Ω 4 Ω C D 4 Ω 4 Ω 4 Ω

1 marks

Answer: A

This question in 0653/22 Feb/March 2021

38 The diagram represents a circuit that includes a battery, an ammeter, a voltmeter and a variable resistor. A V What happens to the readings on the meters as the resistance of the variable resistor is increased? ammeter reading voltmeter reading A decreases decreases B decreases stays constant C increases decreases D increases stays constant

1 marks

Answer: B

This question in 0653/21 May/June 2021

37 The diagram represents a circuit that includes a battery, an ammeter, a voltmeter and a variable resistor. A V What happens to the readings on the meters as the resistance of the variable resistor is increased? ammeter reading voltmeter reading A decreases decreases B decreases stays constant C increases decreases D increases stays constant

1 marks

Answer: B

This question in 0653/22 May/June 2021

37 The diagram represents a circuit that includes a battery, an ammeter, a voltmeter and a variable resistor. A V What happens to the readings on the meters as the resistance of the variable resistor is increased? ammeter reading voltmeter reading A decreases decreases B decreases stays constant C increases decreases D increases stays constant

1 marks

Answer: B

This question in 0653/23 May/June 2021

38 Which combination of resistors has a combined resistance of 4.00? A B Cc D 1.00 4.00 6.0Q 200 pe pe |

1 marks

Answer: C

This question in 0653/23 May/June 2021

40 An air conditioner and a television are both connected to the same electrical circuit. X power air television supply conditioner The current in the air conditioner is 9.0 A and the current in the television is 2.0 A. Several different fuses are available. Which fuse should be connected at X? A 1 A B 3 A C 7 A D 13 A

1 marks

Answer: D

This question in 0653/23 May/June 2021

37 A circuit contains a battery connected to a resistor. Which values of electromotive force (e.m.f.) and resistance produce the smallest current in the circuit? e.m.f. / V resistance /  A 6.0 10 B 6.0 20 C 24 80 D 24 160

1 marks

Answer: D

This question in 0653/21 Oct/Nov 2021

39 The diagrams show four circuits, each containing an ammeter and two lamps with different resistances. Which circuit shows an ammeter with a reading equal to the current in each lamp? A B C D A A A A

1 marks

Answer: A

This question in 0653/21 Oct/Nov 2021

37 A circuit contains a battery connected to a resistor. Which values of electromotive force (e.m.f.) and resistance produce the smallest current in the circuit? e.m.f. / V resistance /  A 6.0 10 B 6.0 20 C 24 80 D 24 160

1 marks

Answer: D

This question in 0653/22 Oct/Nov 2021

38 Four wires are made from the same material but have different lengths and diameters. Which wire has the smallest resistance? length diameter / cm / mm A 50 0.10 B 50 0.20 C 100 0.10 D 100 0.20

1 marks

Answer: B

This question in 0653/22 Oct/Nov 2021

39 The diagrams show four circuits, each containing an ammeter and two lamps with different resistances. Which circuit shows an ammeter with a reading equal to the current in each lamp? A B C D A A A A

1 marks

Answer: A

This question in 0653/22 Oct/Nov 2021

40 The diagram shows a circuit with four labelled components. One component breaks the circuit automatically when the current becomes too large. Which component does this? A D B C

1 marks

Answer: B

This question in 0653/22 Oct/Nov 2021

38 A circuit contains a battery connected to a resistor. Which values of electromotive force (e.m.f.) and resistance produce the smallest current in the circuit? e.m.f. / V resistance /  A 6.0 10 B 6.0 20 C 24 80 D 24 160

1 marks

Answer: D

This question in 0653/23 Oct/Nov 2021

40 The diagrams show four circuits, each containing an ammeter and two lamps with different resistances. Which circuit shows an ammeter with a reading equal to the current in each lamp? A B C D A A A A

1 marks

Answer: A

This question in 0653/23 Oct/Nov 2021

38 Which two changes together must cause the resistance of a wire to increase? change in change in cross-sectional length of wire area of wire A decrease decrease B decrease increase C increase decrease D increase increase

1 marks

Answer: C

This question in 0653/22 Feb/March 2022

39 The diagram shows a circuit with three ammeters. The readings on the ammeters are X, Y and Z. A X Y A Z A Which set of readings on the ammeters is possible? X / A Y / A Z / A A 2 3 5 B 3 2 5 C 3 3 3 D 5 2 3

1 marks

Answer: D

This question in 0653/22 Feb/March 2022

38 A circuit contains two lamps and a variable resistor. lamp 1 lamp 2 The resistance of the variable resistor is increased. What happens to the brightness of lamp 1 and what happens to the brightness of lamp 2? brightness of lamp 1 brightness of lamp 2 A decreases decreases B decreases increases C no change decreases D no change increases

1 marks

Answer: A

This question in 0653/21 May/June 2022

39 The diagram shows a circuit that includes three resistors, a battery and three voltmeters. Readings V1, V2 and V3 on the voltmeters, and currents I1, I2 and I3, are labelled. reading = V1 V I1 I2 V V reading = V2 reading = V3 I3 Which row gives the relationships between the currents and between the voltages? currents voltages A I1 = I2 + I3 V1 = V2 + V3 B I1 = I2 + I3 V1 + V2 = V3 C I1 + I2 = I3 V1 = V2 + V3 D I1 + I2 = I3 V1 + V2 = V3

1 marks

Answer: A

This question in 0653/21 May/June 2022

38 A circuit contains two lamps and a variable resistor. lamp 1 lamp 2 The resistance of the variable resistor is increased. What happens to the brightness of lamp 1 and what happens to the brightness of lamp 2? brightness of lamp 1 brightness of lamp 2 A decreases decreases B decreases increases C no change decreases D no change increases

1 marks

Answer: A

This question in 0653/22 May/June 2022

39 Two identical resistors R1 and R2 are connected to a 3.0 V battery as shown. The switch in the circuit is open. 3.0 V R1 R2 The switch is now closed. What happens? A The current in the battery halves. B The current in the battery stays the same. C The potential difference across R1 stays the same. D The potential difference across R2 becomes 1.5 V.

1 marks

Answer: C

This question in 0653/22 May/June 2022

38 A circuit contains two lamps and a variable resistor. lamp 1 lamp 2 The resistance of the variable resistor is increased. What happens to the brightness of lamp 1 and what happens to the brightness of lamp 2? brightness of lamp 1 brightness of lamp 2 A decreases decreases B decreases increases C no change decreases D no change increases

1 marks

Answer: A

This question in 0653/23 May/June 2022

37 In which circuit is there a current of 2.0A? A B Cc D 6.0V 0.50V 3.0V 1.5V 3.0Q 1.50 6.0Q 0.50Q

1 marks

Answer: A

This question in 0653/21 Oct/Nov 2022

37 In which circuit is there a current of 2.0 A? A B Cc D 6.0V 0.50V 3.0V 1.5V 3.00 1.50 6.0Q 0.50Q

1 marks

Answer: A

This question in 0653/22 Oct/Nov 2022

38 Which circuit is used to measure the current in a lamp and the potential difference (p.d.) across the lamp? A B A V A V C D A A V V

1 marks

Answer: B

This question in 0653/22 Feb/March 2023

39 The diagram shows a circuit containing four resistors and four ammeters. Which ammeter has the smallest reading? A A A D 10 Ω 40 Ω B 30 Ω A 20 Ω A C

1 marks

Answer: B

This question in 0653/22 Feb/March 2023

38 Which circuit is used to determine the resistance of resistor R? A B R R A A V V C D V R V R A A

1 marks

Answer: A

This question in 0653/21 May/June 2023

39 Which arrangement of resistors has the smallest combined resistance? 2.02 3.0Q 4.00

1 marks

Answer: C

This question in 0653/21 May/June 2023

40 The diagram shows two resistors connected in parallel to a battery. Currents I1 and I2 are labelled. Current I1 is greater than current I2. I1 I2 Which calculation gives the current in the battery? ( I + I ) A I1 + I2 B I1 – I2 C I1 × I2 D 1 2 2

1 marks

Answer: A

This question in 0653/21 May/June 2023

32 A circuit contains two lamps and four ammeters. The readings on the ammeters are I1, I2, I3 and I4, as shown. reading = I1 A A reading = I4 reading = I2 A A reading = I3 Which equation is correct? A I1 = I4 = (I2 + I3) B (I1 + I4) = (I2 + I3) C I1 = I2 = I3 = I4 D I2 = I3 = (I1 + I4)

1 marks

Answer: A

This question in 0653/22 May/June 2023

39 The diagram shows a cell connected to a resistor and two meters, X and Y. The circuit is used when determining the resistance of the resistor. X Y What are the quantities measured by meters X and Y, and what are their correct units? meter X meter Y quantity unit quantity unit A current A p.d. V B current V p.d. A C p.d. A current V D p.d. V current A

1 marks

Answer: D

This question in 0653/22 May/June 2023

36 Two resistors P and Q are connected in parallel to a cell, as shown. P Q The resistance of resistor P is greater than the resistance of resistor Q. Which row gives the relationship between the currents in P and Q, and between the potential differences across P and Q? potential current difference (p.d.) A P greater than Q P different to Q B P greater than Q P the same as Q C Q greater than P P different to Q D Q greater than P P the same as Q

1 marks

Answer: D

This question in 0653/23 May/June 2023

40 A circuit contains three ammeters, P, Q and R, and three identical lamps. P A Q A R A How do the readings on the ammeters compare? A All three ammeters show the same reading. B The reading on P is greater than the reading on Q and greater than the reading on R. C The reading on P is less than the reading on Q and less than the reading on R. D The three ammeters show three different readings.

1 marks

Answer: B

This question in 0653/21 Oct/Nov 2023

40 Which two combinations of resistors in parallel have an equal combined resistance? P Q R S) 30Q 200 15Q 16Q 30Q A PandQ B PandS C QandR D RandS

1 marks

Answer: A

This question in 0653/22 Oct/Nov 2023

40 A 4.0  resistor and a 6.0  resistor are connected in parallel. What is the combined resistance of the two resistors? A 0.42  B 2.4  C 5.0  D 10 

1 marks

Answer: B

This question in 0653/23 Oct/Nov 2023

38 A circuit consists of two resistors and a battery. 3.0 V 6.0 Ω 4.0 Ω How much charge flows through the circuit in 2.0 minutes? A 0.60 C B 36 C C 60 C D 3600 C

1 marks

Answer: B

This question in 0653/22 Feb/March 2024

39 A circuit consists of two identical resistors, R1 and R2, and a battery. IB I1 R1 I2 R2 The current in the battery is IB. The current in R1 is I1 and the current in R2 is I2. How are IB, I1 and I2 related? A IB = I1 = I2 B IB > I1 and I1 = I2 C IB < I2 and I1 = I2 D IB > I1 > I2

1 marks

Answer: B

This question in 0653/22 Feb/March 2024

40 The potential difference (p.d.) across a resistor is V. The resistance of the resistor is R. What is the power dissipated in the resistor? V 2 V 2R V 2R 3 V 3 A B C D R R 2

1 marks

Answer: A

This question in 0653/22 Feb/March 2024

39 The diagrams show four circuits, each containing an ammeter and two lamps of different resistances. Which circuit shows an ammeter with a reading equal to the current in each lamp? A B C D A A A A

1 marks

Answer: A

This question in 0653/21 May/June 2024

39 The diagram shows three resistors connected to a 12 V battery. The current at two points in the circuit and the potential difference (p.d.) across one resistor are shown. Another resistor is labelled R. 12 V 3.0 A 3.0 V R 2.0 A What is the current in resistor R and what is the p.d. across resistor R? current in p.d. across resistor R resistor R / A / V A 1.0 3.0 B 1.0 9.0 C 2.0 3.0 D 2.0 9.0

1 marks

Answer: B

This question in 0653/22 May/June 2024

38 A series circuit consists of a variable resistor and a power supply that supplies a variable electromotive force (e.m.f.). Both the resistance of the variable resistor and the e.m.f. of the power supply are changed. Which two changes together must cause the current in the circuit to decrease? resistance of e.m.f. of variable resistor power supply A decreases decreases B decreases increases C increases decreases D increases increases

1 marks

Answer: C

This question in 0653/23 May/June 2024

39 A car has two lamps connected in parallel to a 12 V battery. Each lamp has a resistance of 2.5 . What is the total current in the circuit when the lamps are switched on? A 2.4 A B 4.8 A C 9.6 A D 15 A

1 marks

Answer: C

This question in 0653/23 May/June 2024

38 A power supply causes a current in a circuit. The electromotive force (e.m.f.) of the power supply and the resistance of the circuit are both changed. Which two changes must result in a smaller current in the circuit? e.m.f. resistance A decrease decrease B decrease increase C increase decrease D increase increase

1 marks

Answer: B

This question in 0653/21 Oct/Nov 2024

39 Which circuit shows a voltmeter that measures the potential difference (p.d.) across a variable resistor? A B V V C D V V

1 marks

Answer: C

This question in 0653/21 Oct/Nov 2024

40 An electric circuit contains two resistors connected to a cell. One resistor is labelled R. The switch is shown open. R The switch is now closed. What happens to the potential difference (p.d.) across resistor R, and what happens to the current in resistor R? A The p.d. decreases and the current increases. B The p.d. decreases and the current remains the same. C The p.d. remains the same and the current increases. D The p.d. remains the same and the current remains the same.

1 marks

Answer: D

This question in 0653/21 Oct/Nov 2024

39 A student connects a lamp to a cell. Which change to the circuit can increase the current in the circuit? A connecting a second cell in series B connecting a second lamp in series C connecting a variable resistor in series D connecting an ammeter in series

1 marks

Answer: A

This question in 0653/23 Oct/Nov 2024

40 Four ammeters, V, W, X and Y, are connected in the circuit shown. V W A A Y X A A Which ammeters have the same reading as each other? A V, W, X and Y B V and W only C V and Y only D X and Y only

1 marks

Answer: A

This question in 0653/23 Oct/Nov 2024

39 A 6.0  resistor is connected in parallel with a 12  resistor. What is the combined resistance of the two resistors in parallel? A 0.25  B 4.0  C 18  D 72 

1 marks

Answer: B

This question in 0653/22 Feb/March 2025

39 A student determines the resistance of resistor R. Which circuit is used to obtain the readings needed? A B + – + – V R R A A V C D + – + – A R R V A V

1 marks

Answer: A

This question in 0653/21 May/June 2025

39 A 400  resistor and a 100  resistor are connected in parallel. 400 Ω 100 Ω What is the combined resistance of the two resistors? A 40  B 80  C 250  D 500 

1 marks

Answer: B

This question in 0653/22 May/June 2025

39 The diagram shows two resistors connected to a battery. 2.0 A I 6.0 A What is current I ? A 2.0 A B 4.0 A C 6.0 A D 8.0 A

1 marks

Answer: B

This question in 0653/23 May/June 2025

38 In the circuit shown, the switch is open. A A student closes the switch. Which row shows what happens to the ammeter reading and what happens to the total resistance of the circuit? ammeter reading total resistance A decreases decreases B decreases increases C increases decreases D increases increases

1 marks

Answer: C

This question in 0653/21 Oct/Nov 2025

39 The circuit shows four 4.0 Q resistors connected to a power supply. What is the total resistance of the circuit? A 1.00 B 2.0Q C 4.00 D 16

1 marks

Answer: C

This question in 0653/21 Oct/Nov 2025

37 The circuit shows two identical lamps connected in parallel to a 12 V power supply. The reading on the ammeter is 3.0 A. 12 V A What is the power transferred by each lamp? A 4.0 W B 8.0 W C 18 W D 36 W

1 marks

Answer: C

This question in 0653/22 Oct/Nov 2025

38 The circuit shown contains a 12 resistor and a 6.0 resistor connected in parallel. 120 | eon | What is the combined resistance of the two resistors? A 0.250 B 4.0Q C 9.02 D 18Q

1 marks

Answer: B

This question in 0653/22 Oct/Nov 2025

38 A resistor of resistance 6.0  is connected in parallel with a resistor of resistance 3.0 . What is the resistance of the parallel combination? A 0.50  B 2.0  C 3.0  D 9.0 

1 marks

Answer: B

This question in 0653/23 Oct/Nov 2025