Electrical circuits — Paper 2 · IGCSE Sciences - Co-ordinated (9-1) 0973

36 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 0973/21 May/June 2019

39 A transformer increases the voltage from a power station in order to transfer electricity along the transmission cables. How does increasing the voltage affect the current in the cables and how does it affect the efficiency of energy transfer? current efficiency A decreases decreases B decreases increases C increases decreases D increases increases

1 marks

Answer: B

This question in 0973/21 May/June 2019

36 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 0973/22 May/June 2019

37 A circuit contains a power supply, a lamp, an ammeter and a NTC thermistor, connected in series. A The NTC thermistor is now heated. What happens to the brightness of the lamp and what happens to the ammeter reading? brightness ammeter of lamp reading A decreases decreases B decreases increases C increases decreases D increases increases

1 marks

Answer: D

This question in 0973/22 May/June 2019

36 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 0973/21 Oct/Nov 2019

36 Which graph is the current–voltage characteristic of a filament lamp? A B current current 0 0 0 voltage 0 voltage C D current current 0 0 0 voltage 0 voltage

1 marks

Answer: C

This question in 0973/22 May/June 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 0973/21 Oct/Nov 2020

37 Which combination of resistors has a combined resistance of 2.0 ? A B C D 3.0 Ω 6.0 Ω 2.0 Ω 1.0 Ω 6.0 Ω 8.0 Ω 2.0 Ω 1.0 Ω

1 marks

Answer: A

This question in 0973/21 May/June 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 0973/21 May/June 2022

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 0973/22 May/June 2022

37 A battery of electromotive force (e.m.f.) 10 V is connected to two lamps X and Y. 10 V X Y 2.0 A The current in lamp Y is 2.0 A. The power of lamp Y is half the power of lamp X. How much energy is transferred by the battery in 1.0 minute? A 30 J B 1800 J C 2400 J D 3600 J

1 marks

Answer: D

This question in 0973/21 Oct/Nov 2022

36 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 0973/21 May/June 2023

39 Cables transmit electrical power. The power input to the cables is constant, but the voltage input is increased. What happens to the power loss from the cables, and what happens to the current in the cables? power loss current in from cables cables A decreases decreases B decreases increases C increases decreases D increases increases

1 marks

Answer: A

This question in 0973/22 May/June 2023

38 A battery is connected in a circuit to a 3.0  resistor, a 6.0  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 /  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 0973/21 Oct/Nov 2023

37 Two resistors with different resistances are connected to a power supply. The resistors can be connected either in parallel or in series. Which statement is correct? A For resistors in parallel, the currents in the resistors are equal. B For resistors in parallel, the potential differences (p.d.s) across the resistors are different. C For resistors in series, the currents in the resistors are equal. D For resistors in series, the potential differences (p.d.s) across the resistors are equal.

1 marks

Answer: C

This question in 0973/21 May/June 2024

37 A circuit contains a cell and two resistors connected in parallel. The currents in each part of the circuit are labelled I1, I2 and I3. I1 I2 I3 What is the relationship between the currents? A I1 = I2 B I1 = I3 C I1 > I2 + I3 D I1 = I2 + I3

1 marks

Answer: D

This question in 0973/21 Oct/Nov 2024

37 The diagram shows resistors of resistance R1 and R2 connected in parallel. The combined resistance of the resistors is RT. Currents I1, I2 and I3 are labelled. I1 I2 R1 I3 R2 Which row is correct? current I1 resistance RT A larger than I3 smaller than R2 B larger than I3 larger than R1 C smaller than I2 smaller than R2 D smaller than I2 larger than R1

1 marks

Answer: A

This question in 0973/21 May/June 2025

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 0973/21 Oct/Nov 2025