Electrical circuits — Paper 1 · IGCSE Sciences - Co-ordinated (9-1) 0973

36 The diagram shows two 30 Ω resistors and an ammeter connected to a 120 V battery. 120 V 30 Ω 30 Ω A What is the reading on the ammeter? A 0.25 A B 0.50 A C 2.0 A D 4.0 A

1 marks

Answer: C

This question in 0973/11 May/June 2019

37 In the circuit, component X is used to control the brightness of the lamp. lamp cell – + X What is component X? A an ammeter B a fixed resistor C a fuse D a variable resistor

1 marks

Answer: D

This question in 0973/11 May/June 2019

38 A student connects a length of metal resistance wire to a battery. current metal resistance wire The student wishes to increase the current in the resistance wire. Which change does this? A connecting a second wire in series with the first wire B heating the wire C making the wire shorter D making the wire thinner

1 marks

Answer: C

This question in 0973/11 May/June 2019

36 The circuit shown is used when determining the resistance of a lamp. A V The ammeter reading is 2.0 A and the voltmeter reading is 6.0 V. What is the resistance of the lamp? A 0.33 Ω B 3.0 Ω C 8.0 Ω D 12 Ω

1 marks

Answer: B

This question in 0973/11 May/June 2020

37 The diagram shows a circuit containing two resistors of resistance R and 2R, and two ammeters X and Y. X R A Y A 2R Which ammeter shows the largest reading, and what is the combined resistance of the two resistors? ammeter with combined largest reading resistance A X less than R B X more than 2R C Y less than R D Y more than 2R

1 marks

Answer: C

This question in 0973/11 May/June 2020

36 A resistor R is connected to a 12 V battery and an ammeter as shown. A 12 V R The ammeter reads 6.0 A. What is the resistance of resistor R? A 0.50  B 2.0  C 18  D 72 

1 marks

Answer: B

This question in 0973/11 Oct/Nov 2020

37 A 3.0  resistor and a 6.0  resistor are connected to a power supply as shown. 3.0 Ω power supply 6.0 Ω What is the combined resistance of the two resistors? A 2.0  B 4.5  C 9.0  D 18 

1 marks

Answer: C

This question in 0973/11 Oct/Nov 2020

38 The series circuit shown includes a single component hidden in a box. The switch is open. component hidden in box The switch is now closed and the lamp lights briefly before going off. The switch is now opened, and then closed again. This time the lamp does not light. Which symbol represents the component in the box? A B C D A

1 marks

Answer: A

This question in 0973/11 Oct/Nov 2020

36 Which circuit shows an ammeter that measures the current in the lamp and a voltmeter that measures the potential difference (p.d.) across the lamp? A B V V A A C D A A V V

1 marks

Answer: C

This question in 0973/11 May/June 2021

37 A student connects a circuit as shown. 10 Ω 15 Ω What is the total resistance of the circuit? A 5.0 Ω B 10 Ω C 15 Ω D 25 Ω

1 marks

Answer: D

This question in 0973/11 May/June 2021

36 Which circuit can be used to take measurements to determine the resistance of resistor R? A B C D V V A A R R R R A V A V

1 marks

Answer: D

This question in 0973/12 May/June 2021

37 In which circuit can the brightness of the lamp be varied continuously? A B C D

1 marks

Answer: A

This question in 0973/12 May/June 2021

37 What is represented by the circuit symbol shown? A fixed resistor B fuse C switch D variable resistor

1 marks

Answer: D

This question in 0973/11 Oct/Nov 2021

38 Three resistors are connected in series with a battery, as shown. P Q The current at point P is 6.0 A. What is the current at point Q? A 0 A B 2.0 A C 3.0 A D 6.0 A

1 marks

Answer: D

This question in 0973/11 Oct/Nov 2021

37 Which row shows how lamps are connected in a lighting circuit in a house and gives an advantage of connecting them in this way? how lamps are advantage of connecting connected them in this way A in parallel they can be switched separately B in parallel they share the voltage C in series they can be switched separately D in series they share the voltage

1 marks

Answer: A

This question in 0973/11 May/June 2022

38 A 240 V mains lamp operating normally has a working resistance of 480 . Which rating of fuse is most suitable to use with this lamp? A 0.4 A B 1 A C 2 A D 4 A

1 marks

Answer: B

This question in 0973/11 May/June 2022

37 A student connects a circuit to determine the resistance of a resistor. Which circuit enables the current in the resistor and the potential difference (p.d.) across it to be measured? A B A V A V C D V A V A

1 marks

Answer: A

This question in 0973/12 May/June 2022

38 Which row shows how lamps are connected in a lighting circuit in a house and gives an advantage of connecting them in this way? how lamps are advantage of connecting connected them in this way A in parallel they can be switched separately B in parallel they share the voltage C in series they can be switched separately D in series they share the voltage

1 marks

Answer: A

This question in 0973/12 May/June 2022

37 In which circuit is it possible to change the brightness of one lamp without changing the brightness of the other lamp? A B C D

1 marks

Answer: B

This question in 0973/11 Oct/Nov 2022

38 Circuits 1 and 2 contain identical cells and identical resistors. Each resistor has the same resistance R. The current in the cell in circuit 1 is I. I R R R circuit 1 circuit 2 How do the total resistance of circuit 2 and the current in the cell in circuit 2 compare with R and I ? total resistance current in cell of circuit 2 in circuit 2 A greater than R greater than I B greater than R less than I C less than R greater than I D less than R less than I

1 marks

Answer: C

This question in 0973/11 Oct/Nov 2022

37 A battery of e.m.f. V is connected across a resistor of resistance R. There is a current in the resistor. V R current Which row shows two changes that both increase the current in the resistor? change 1 change 2 A decrease V decrease R B decrease V increase R C increase V decrease R D increase V increase R

1 marks

Answer: C

This question in 0973/11 May/June 2023

37 The diagrams show four identical resistors connected together in different arrangements. Which arrangement has the smallest combined resistance? A B C D

1 marks

Answer: D

This question in 0973/12 May/June 2023

38 A battery is connected in a circuit to a 3.0 Ω resistor, a 6.0 Ω resistor and two ammeters P and Q. A Q P 3.0 Ω A 6.0 Ω What is the combined resistance of the two resistors and which ammeter has the greater reading? combined ammeter with resistance / Ω greater reading A less than 3.0 P B less than 3.0 Q C 9.0 P D 9.0 Q

1 marks

Answer: B

This question in 0973/11 Oct/Nov 2023

37 In the circuits shown, all the resistors are identical. Which circuit has the smallest combined resistance? A B C D

1 marks

Answer: B

This question in 0973/11 May/June 2024

37 A 2.0  resistor and a 1.0  resistor are connected in series with a cell. 2.0 Ω 1.0 Ω Which statement about current in the circuit is correct? A The current in the 2.0  resistor is double the current in the 1.0  resistor. B The current in the 2.0  resistor is equal to the current in the 1.0  resistor. C The current in the 2.0  resistor is half the current in the 1.0  resistor. D The current in the cell is larger than the current in either resistor.

1 marks

Answer: B

This question in 0973/12 May/June 2024

37 The diagram shows two resistors connected in parallel to a battery. The circuit contains a voltmeter and an ammeter. V A A third resistor is now connected in parallel with these two resistors. What happens to the voltmeter reading and what happens to the ammeter reading? ammeter reading voltmeter reading A decreases increases B decreases stays the same C increases increases D increases stays the same

1 marks

Answer: D

This question in 0973/11 Oct/Nov 2024

36 In which circuit can the brightness of the lamp be varied continuously? A B C D

1 marks

Answer: C

This question in 0973/11 May/June 2025

37 A 12  resistor is connected in parallel with a 17  resistor. Which statement about the combined resistance of the two resistors is correct? A It must be equal to 29 . B It must be greater than 12  but less than 17 . C It must be greater than 17  but less than 29 . D It must be less than 12 .

1 marks

Answer: D

This question in 0973/11 May/June 2025

36 Which circuit is suitable for determining the resistance of the fixed resistor? A B V A V A C D A V V A

1 marks

Answer: D

This question in 0973/12 May/June 2025

37 The diagram shows a circuit containing three cells, a variable resistor and an electric motor. M Which actions together must increase the speed of the motor? A decreasing the number of cells and decreasing the resistance of the variable resistor B decreasing the number of cells and increasing the resistance of the variable resistor C increasing the number of cells and decreasing the resistance of the variable resistor D increasing the number of cells and increasing the resistance of the variable resistor

1 marks

Answer: C

This question in 0973/12 May/June 2025

38 The diagram shows a 3.0  resistor connected to a 6.0  resistor. 3.0 Ω 6.0 Ω What is a possible combined resistance of the two resistors? A 2.0  B 3.0  C 4.5  D 9.0 

1 marks

Answer: A

This question in 0973/12 May/June 2025