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?

Question

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.

Anonymous · Accepted Answer

B is the correct answer

PsyDAG · Answer

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.