Pearson Edexcel International GCSE (9–1) · PHYSICS · Section
ELECTRICAL RESISTANCE
16 practice questions
Practice questions
1–10 of 16
Question 1
1 mark · Easy
Answer and see the solution →State the unit used to measure electrical resistance.
Question 2
1 mark · Easy
Answer and check →Which of these is the correct symbol for the unit of resistance?
- A.Ω
- B.R
- C.A
- D.V
Question 3
2 marks · Easy
Answer and see the solution →Describe what is meant by the resistance of a component in an electrical circuit.
Question 4
1 mark · Easy
Answer and check →Which of the following circuits would have the greatest total resistance?
Three circuits showing resistors in series and in parallel. - A.A single 10 Ω resistor in series with a cell
- B.Two 5 Ω resistors in parallel with a cell
- C.Two 5 Ω resistors in series with a cell
- D.A cell with no resistors
Question 5
2 marks · Easy
Answer and see the solution →A buzzer in a circuit is connected to a 6 V battery and the current flowing is 0.5 A. Calculate the resistance of the buzzer. Give your answer with the correct unit.
Question 6
3 marks · Easy
Answer and see the solution →The diagram shows a circuit containing a 9 V battery and two resistors, each of 3 Ω, connected in series.
Series circuit: battery (9 V) and two resistors (each 3 Ω) (a)[1 mark]State the total resistance in the circuit.
(b)[2 marks]Calculate the current flowing through the circuit.
Question 7
2 marks · Easy
Answer and see the solution →Explain why the resistance of a wire increases if its temperature increases.
Question 8
2 marks · Easy
Answer and see the solution →The table shows the current for different voltages across a wire in an experiment:
Voltage / V Current / A 1.0 0.2 2.0 0.4 3.0 0.6 Calculate the resistance of the wire using the data.
Question 9
3 marks · Normal
Answer and see the solution →An electric heater draws a current of 2.5 A when a voltage of 60 V is applied across it.
(a)[1 mark]State the equation that relates voltage, current and resistance.
(b)[2 marks]Calculate the resistance of the heater. Include units.
Question 10
3 marks · Normal
Answer and see the solution →A lamp in a circuit has a resistance of 15 Ω. The potential difference across the lamp is 6.0 V.
Calculate the current passing through the lamp. Show your working and give the unit.