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 po bw: kkqy-llfb:./ a/ xsitive charge, causing its ) 6tj;7i0ppoe y2bjjy 7r z7usfoil leaves to separate eb 67i2tryupjsp;y)oj70jz 7. When an object is brought near the top plate of the electroscope, the foils separate even further. We could conclude
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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