Electric Field and Electric Induction (id: 7eadb7d2f)

本题目来源于试卷: Electric Field and Electric Induction，类别为 美国物理杯赛(Physics Bowl)

[单选题]
98.09: An electroscope is given a positiv2nz b50w k7qqx/reg rb)..jlse charge, causing i6go(nwis u34jrt9i8 gspc 8 j7ts foil leaves to separate. When an object is brought near the top plate of the electroscope, the foils separate even further. We could conclude tws8 s iu6onpg(jg8c3r9i47j

A. that the object is positively charged.
B. that the object is electrically neutral.
C. that the object is negatively charged.
D. only that the object is charged.
E. only that the object is uncharged.


参考答案:  A


本题详细解析: 暂无

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