Concept explainers
Figure 32.12 shows a negatively charged plastic comb attracting bits of paper with no net charge. If the comb were positively charged, would it attract the same bits of paper? Defend your answer.
Whether a positively charged comb would attract the bits of paper.
Explanation of Solution
Introduction:
The bits of paper are electrically neutral. Hence, it has same amount of positive as well as negative charges.
When a negatively charged comb is brought near the piece of paper, it attracts the positive charge inside the paper. Therefore, due to attraction between the negative and positive charges, piece of paper is attracted towards the negatively charged comb.
The positively charged comb would attract the negative charge of the paper. Therefore, there will be again an attraction between pieces of paper and comb.
Chapter 32 Solutions
Conceptual Physics: The High School Physics Program
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