Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter
Electric Charge
74 practice questions
Topics covered
Practice questions
51–60 of 74
Question 51
1 mark · Easy
Answer and see the solution →State one reason why static electricity can be dangerous when refuelling vehicles.
Question 52
2 marks · Easy
Answer and see the solution →Describe what happens to charged dust particles as they pass through an electrostatic precipitator.
Question 53
1 mark · Easy
Answer and check →Which of the following is a problem that can arise due to static electricity in factories producing flour or grain?
- A.It can cause dust explosions.
- B.It increases the temperature of the flour.
- C.It makes the machinery run faster.
- D.It helps to remove moisture from the grain.
Question 54
3 marks · Easy
Answer and see the solution →The diagram shows smoke particles in a chimney. The smoke is passed through a mesh of highly charged wires and then through plates connected to earth.
Electrostatic precipitator setup (a)[1 mark]Explain why the dust particles gain a charge as they pass through the mesh.
(b)[2 marks]Explain why the charged dust particles are attracted to the earthed plate.
Question 55
2 marks · Easy
Answer and see the solution →Explain why it is important to avoid wearing rubber-soled shoes when working in environments with flammable gases.
Question 56
1 mark · Easy
Answer and see the solution →State one safety measure used in factories to reduce the dangers of static electricity.
Question 57
2 marks · Easy
Answer and see the solution →In a photocopier, explain why the toner powder sticks to some parts of the drum but not to others.
Question 58
2 marks · Easy
Answer and see the solution →Explain why walking across a carpet and then touching a metal door handle can cause you to feel a small shock.
(a)[1 mark]What happens to your body as you walk across the carpet?
(b)[1 mark]Why do you feel a shock when you touch the metal handle?
Question 59
2 marks · Normal
Answer and see the solution →Explain why fuel tankers must be earthed before transferring fuel.
Question 60
2 marks · Normal
Answer and see the solution →A worker is repairing computer equipment. Explain why the worker must avoid wearing clothes made entirely from synthetic materials.