Science

In a classroom experiment, a student rubs a comb against her hair. The child is then brought near bits of paper resting on a surface. Which of these can be concluded if the comb picks up bits of paper?
A. The comb is an insulator, but paper conducts electricity.
B. The combination had a net charge on it, and it attracted a neutral object.
C. The comb was left uncharged, and it attracted a positively charged object.
D. The comb was positively charged, and it attracted a negatively charged object.

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  1. From Google

    When you brushed that comb through your hair, tiny parts of the atoms in your hair, called ELECTRONS, collected on the comb. These electrons have a NEGATIVE charge. ... Then charge your comb again by brushing it through your hair, and bring it close to the tiny pieces of tissue.

    Now you choose the correct alternative.

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  2. B is the correct answer

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