A student rubs two balloons on her hair.
Both balloons become negatively charged.
Explain why both balloons have the same type of charge.
The student holds the two balloons by their strings so that they hang close together.
Describe what happens to the balloons.
Give a reason for your answer.
The student's hair becomes positively charged.
Explain why.
Give a reason why protons are not transferred when the balloons are rubbed on the hair.
The student holds one of the balloons close to her hair.
Describe what happens to her hair.
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.