Concept explainers
Two lightweight, electrically neutral
Figure Q20.22
a. Both are touched by a negatively charged rod.
b. Ball 1 is touched by a negatively charged rod and ball 2 is touched by a positively charged rod.
c. Both are touched by a negatively charged rod but ball 2 picks up more charge than ball 1.
d. Only ball 1 is touched by a negatively charged rod.
Note that parts a through d are independent; these are not actions taken in sequence.
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