7. After combing your hair briskly, the comb will pick up small pieces of paper

Question

7. After combing your hair briskly, the comb will pick up small pieces of paper a. Is the comb charged? Explain. ave no chFect onthe Cs. A neutro l'ieces of papey that ovenot Chainge b. How can you be sure that it isn't the paper that is charged? Propose an experiment to test this. ieces ofpepey, but have no e Fect on uncharged pieces c. Is your hair charged after being combed? What evidence do you have for your answer Charge vep elling ede Plushe creats oppo el hged hoir end Plushic. d. What kind of charge is the comb likely to have? Why? e. How could you test your answer to part d?

Explanation / Answer

Part d)

Negative charge. Plastic rubbed by wool gains a negative charge and your hair would take the role of wool.

Part e)

Charge a plastic rod with wool. If it repels the comb then the comb is also negatively charged.

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