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

37 There is a current of 3.0 A in a resistor. The potential difference across the resistor is 3.0 V. How much electrical energy is transferred to other forms in 3.0 minutes? A 3.0 J B 9.0 J C 540 J D 1620 J

1 marks

Answer: D

This question in 0973/21 May/June 2019

34 There is a current of 3.0 A in a resistor. How much electric charge passes through the resistor in 2.0 minutes? A 0.025 C B 1.5 C C 6.0 C D 360 C

1 marks

Answer: D

This question in 0973/22 May/June 2019

35 There is a current of 6.0 A in an electric heater. How much charge passes through the heater in one minute? A 0.10 C B 6.0 C C 10 C D 360 C

1 marks

Answer: D

This question in 0973/21 Oct/Nov 2019

37 An electric kettle is rated at 3.0 kW and is connected to a 250 V supply. The kettle is switched on for 2.0 minutes. Which row shows the current in the kettle and the energy transferred by the kettle? current / A energy / J A 12 6000 B 12 360 000 C 750 6000 D 750 360 000

1 marks

Answer: B

This question in 0973/21 Oct/Nov 2019

37 The diagram shows a wire with resistance R. length diameter Both the length and the diameter of the wire are now doubled. What is the new resistance of the wire after both of these changes? A R B R C 2R D 4R 2

1 marks

Answer: A

This question in 0973/21 May/June 2020

37 There is a current of 100 mA in a circuit. How much charge flows through the circuit in 1.5 minutes? A 0.15 C B 9.0 C C 150 C D 9000 C

1 marks

Answer: B

This question in 0973/22 May/June 2020

37 There is a current of 12 A in an electric kettle. How much charge passes through the kettle in one minute? A 0.20 C B 5.0 C C 12 C D 720 C

1 marks

Answer: D

This question in 0973/21 Oct/Nov 2020

36 A wire is 50 cm long and has a resistance of 16 . A second wire is made of the same material. It is 75 cm long and has twice the cross-sectional area of the first wire. What is the resistance of the second wire? A 6.0  B 12  C 32  D 48 

1 marks

Answer: B

This question in 0973/22 May/June 2021

37 Which statements about the current–voltage characteristic of a filament lamp are correct? 1 It is a curve. 2 It passes through the origin. 3 It shows current increasing as voltage increases. A 1 and 2 only B 1 and 3 only C 2 and 3 only D 1, 2 and 3

1 marks

Answer: D

This question in 0973/22 May/June 2021

36 The resistance of a wire is 20 . A second wire is made of the same material. The second wire is four times as long and has half the cross-sectional area of the first wire. What is the resistance of the second wire? A 10  B 40  C 80  D 160 

1 marks

Answer: D

This question in 0973/21 May/June 2022

31 Which electrical device transfers chemical energy into electrical energy? A battery B lamp C electric motor D television

1 marks

Answer: A

This question in 0973/21 Oct/Nov 2022

36 A resistance wire of cross-sectional area A and length l has resistance R. A l Wires X, Y and Z are made of the same material as the first wire but have different dimensions as shown. 2A 2A A 2l l 2l wire X wire Y wire Z Which of the wires X, Y and Z has resistance R ? A wire X B wire Y C wire Z D none of them

1 marks

Answer: B

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

37 An electric kettle is connected to a 250 V supply. The current in the heating element of the kettle is 10 A. How much electrical energy is transferred in 3.0 minutes? A 75 J B 4500 J C 7500 J D 450 000 J

1 marks

Answer: D

This question in 0973/21 May/June 2023

37 Which graph shows the current–voltage characteristics of an ohmic resistor and a filament lamp? A B filament lamp filament lamp current current ohmic ohmic resistor resistor 0 0 0 voltage 0 voltage C D filament lamp filament lamp current current ohmic ohmic resistor resistor 0 0 0 voltage 0 voltage

1 marks

Answer: A

This question in 0973/21 Oct/Nov 2023

36 The current in an ammeter is 1.5 A. How much charge passes through the ammeter in one minute? A 0.025 C B 1.5 C C 40 C D 90 C

1 marks

Answer: D

This question in 0973/21 May/June 2024

38 There is an alternating current (a.c.) in a metal wire. Which statement about the current is correct? A It is a flow of both positively and negatively charged particles. B It is a flow of charged particles, first in one direction then in the opposite direction repeatedly. C It is a flow of charged particles in both directions at the same time. D It is a flow of charged particles steadily in one direction.

1 marks

Answer: B

This question in 0973/21 May/June 2024

36 The graph shows how the resistance of a thermistor changes with temperature. 6.0 resistance of 5.0 thermistor / kΩ 4.0 3.0 2.0 1.0 0 0 10 20 30 40 50 60 70 80 90 100 temperature / °C There is a potential difference (p.d.) of 6.0 V across the thermistor. What is the current in the thermistor when it is at a temperature of 50 C? A 0.0020 A B 0.50 A C 2.0 A D 500 A

1 marks

Answer: A

This question in 0973/22 May/June 2024

37 A kettle is connected to a 230 V mains supply. The current in the kettle is 10 A. How much energy is transferred in 3.0 minutes? A 12.8 J B 767 J C 6900 J D 414 000 J

1 marks

Answer: D

This question in 0973/22 May/June 2024

36 A wire of a certain length has a resistance of 8.0 . A second wire made of the same material has double the length and double the cross-sectional area of the first wire. What is the resistance of the second wire? A 4.0  B 8.0  C 16  D 32 

1 marks

Answer: B

This question in 0973/21 Oct/Nov 2024

36 An electric kettle is rated at 3.0 kW and is connected to a 250 V supply. The kettle is switched on for 2.0 minutes. Which row shows the current in the kettle and the energy transferred by the kettle? current / A energy / J A 12 6000 B 12 360 000 C 750 6000 D 750 360 000

1 marks

Answer: B

This question in 0973/21 May/June 2025

37 There is a current of 100 mA in a circuit. How much charge flows through the circuit in 1.5 minutes? A 0.15 C B 9.0 C C 150 C D 9000 C

1 marks

Answer: B

This question in 0973/22 May/June 2025

38 A student connects a length of metal resistance wire to a battery. current metal resistance wire Which change increases the current in the resistance wire? 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 0973/22 May/June 2025