Question 10
FA student combs her dry hair with a plastic comb.
The comb becomes negatively charged.
The student holds the comb just above some small pieces of paper on a table.
The Figure shows what happens.
Figure
a.[1]
Give the name of the object that loses electrons when the student combs her hair.
b.[3]
The pieces of paper are uncharged.
Explain why the pieces of paper are attracted to the comb.
c.[2]
A few pieces of paper touch the comb and then quickly fall away from it.
Explain why.
d.[2]
The student repeats the experiment with a metal comb held in her hand.
The pieces of paper are not lifted.
Explain why.
11.1 Charging by friction Questions
91 exam-style questions on Edexcel GCSE Physics 11.1 Charging by friction, covering 11.1.1 Charging insulators by friction, 11.1.2 Forces between charges, 11.1.3 Electrostatic phenomena, and 11.1.4 Earthing and removing charge. Each one has a worked solution and a mark scheme showing where the marks go.