Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter
Units (Electricity)
87 practice questions
Topics covered
Practice questions
11–20 of 43 · Easy
Question 11
1 mark · Easy
Answer and see the solution →Describe what is meant by the 'heating effect' of electrical current.
Question 12
3 marks · Easy
Answer and see the solution →A 60 W lamp is switched on for 5 seconds.
(a)[1 mark]State what the lamp’s power rating of 60 W means.
(b)[2 marks]Calculate how much energy is transferred by the lamp in 5 seconds.
Question 13
1 mark · Easy
Answer and see the solution →Give one example of an everyday appliance that uses the heating effect of electric current.
Question 14
2 marks · Easy
Answer and see the solution →An electric heater is labelled 500 W. How much energy does it transfer in 8 seconds?
Question 15
2 marks · Easy
Answer and see the solution →Explain why the wires inside an electric oven are designed to have high resistance.
Question 16
1 mark · Easy
Answer and check →Which statement best describes why a 100 W bulb is brighter than a 40 W bulb?
- A.It transfers more energy every second.
- B.It uses less current.
- C.It is bigger in size.
- D.It has a higher resistance.
Question 17
1 mark · Easy
Answer and see the solution →State the unit of energy transferred in an electric circuit.
Question 18
1 mark · Easy
Answer and check →Which of the following best describes direct current (d.c.)?
- A.A current that constantly changes direction and size.
- B.A current that is always in the same direction with a constant value.
- C.A current that is always zero.
- D.A current that reverses direction every second.
Question 19
2 marks · Easy
Answer and see the solution →A small fan operates at a power of 10 W. How much energy does it transfer in 3 minutes?
Question 20
3 marks · Easy
Answer and see the solution →A torch uses a battery to provide electricity to a bulb.
(a)[1 mark]State whether the current from the battery is alternating current (a.c.) or direct current (d.c.).
(b)[2 marks]Give a reason for your answer.