本题目来源于试卷: Physics Unit16: Electric Charge and Electric Field，类别为 通用国际物理
[单选题]
An originally neutral eleb7qp og- 9w*wult-f s :yt81ahctroscope is briefly touched with a positively )41c mcegzy s)i:8gcc charged glass rod. The electroscoi18gemc)4 )czysc cg :pe
A. remains neutral.
B. becomes negatively charged.
C. becomes positively charged.
D. could become either positively or negatively charged, depending on the time of contact.
参考答案: C
本题详细解析:
暂无
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