Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Electricity
249 practice questions
Topics covered
Practice questions
91–100 of 127 · Normal
Question 91
3 marks · Normal
Answer and see the solution →A pupil rubs a balloon with a woolen cloth and then holds it next to a wall. The balloon sticks to the wall.
Explain, in terms of charges, why the balloon is able to stick to the wall.
Question 92
1 mark · Normal
Answer and check →Which of the following describes what happens when a positively charged rod is brought near a negatively charged rod?
- A.The rods attract each other.
- B.The rods repel each other.
- C.There is no force between them.
- D.Both rods become neutral.
Question 93
4 marks · Normal
Answer and see the solution →A student hangs a thin strip of aluminium foil from a wooden support. The foil is initially uncharged. She brings a charged rod near it and observes the foil moving towards the rod.
(a)[1 mark]Describe what type of force acts between the charged rod and the uncharged foil.
(b)[2 marks]Explain, in terms of charge, how the uncharged foil is able to be attracted to the charged rod.
(c)[1 mark]State what happens if the foil and the rod become similarly charged and the rod is brought near again.
Question 94
2 marks · Normal
Answer and see the solution →Describe what happens when a student charges a comb by running it through their hair and then brings the comb near small pieces of paper.
Question 95
3 marks · Normal
Answer and see the solution →Describe an experiment to show that there are forces of attraction and repulsion between charged rods. In your answer, name the main items used and outline how you would observe both attraction and repulsion.
Question 96
2 marks · Normal
Answer and see the solution →Explain why a girl’s hair stands on end after touching a Van de Graaff generator.
Question 97
1 mark · Normal
Answer and check →Which statement correctly describes the force between a charged rod and a small, uncharged paper strip?
- A.There is an attractive force between them.
- B.There is a repulsive force between them.
- C.There is no force between them.
- D.The paper becomes positively charged and repels the rod.
Question 98
2 marks · Normal
Answer and see the solution →Inkjet printers use static electricity to control where drops of ink land on the paper. Explain how electrostatic forces help form the image on the paper.
Question 99
2 marks · Normal
Answer and see the solution →A plastic rod is charged and held near a thin stream of water from a tap. Describe what happens to the stream, and explain why this occurs.
Question 100
1 mark · Normal
Answer and check →Which process best describes how static electricity is used in inkjet printers?
- A.Charged ink drops are directed by electrostatic forces onto the paper.
- B.Ink is magnetised to stick to the paper.
- C.Electric current heats the ink drops.
- D.A laser is used to fix the ink onto the paper.