本题目来源于试卷: Electric Charge and Electric Field，类别为 IB物理学
[问答题]
If you charge a pocket comb by rubbing it with a silk scarf,; x82vu mr; .hhawws6h howsg +9ve9sf3 ys can you determine if the comb is positively or negativss+g v99yef3 sely charged?
参考答案:
A plastic ruler is
suspended by a thread and then rubbed with a cloth. As discussed in section
16-1, the ruler is negatively charged.
Bring the charged comb close to the ruler. If the ruler is repelled by the comb, then
the comb is negatively charged. If the
ruler is attracted by the comb, then the comb is positively charged.
本题详细解析:
暂无
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