If a balloon is rubbed against hair, it becomes negatively charged. The balloon is shown in Fig. 5.1.
(a)[2]
Explain how rubbing makes the balloon negatively charged.
(b)[2]
Explain why the hair is drawn towards the balloon.
(c)[1]
Explain why it matters that the balloon is made from an electrical insulator.
(d)[1]
State one example of a use of static electricity.
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