Pearson Edexcel International GCSE (9–1) · PHYSICS · Section
MAINS ELECTRICITY
15 practice questions
Practice questions
1–10 of 15
Question 1
1 mark · Easy
Answer and see the solution →What is the correct SI unit for resistance?
Question 2
1 mark · Easy
Answer and check →Which of these wires in a plug is normally at 0 V?
- A.Live wire
- B.Neutral wire
- C.Earth wire
- D.Fuse
Question 3
1 mark · Easy
Answer and see the solution →State the role of the earth wire in a domestic mains circuit.
Question 4
1 mark · Easy
Answer and see the solution →Name the SI unit used to measure electric current.
Question 5
3 marks · Easy
Answer and see the solution →A UK plug connects an electric iron to the mains supply.
(a)[1 mark]Name the material used for the plug's casing.
(b)[1 mark]State why this material is used for the casing.
(c)[1 mark]Name the metal most commonly used for the pins inside the plug.
Question 6
2 marks · Easy
Answer and see the solution →A toaster is designed to work with a current of 4 A.
(a)[1 mark]What size fuse should be used to protect this toaster?
(b)[1 mark]Explain why it is not safe to use a fuse with a much higher rating.
Question 7
1 mark · Easy
Answer and see the solution →State the SI unit used to measure electric charge.
Question 8
1 mark · Easy
Answer and see the solution →Give the SI unit for electrical power.
Question 9
1 mark · Normal
Answer and see the solution →What is the function of the live wire in a domestic mains circuit?
Question 10
1 mark · Normal
Answer and see the solution →State why the casing of a plug is made from plastic.