本题目来源于试卷: Physics Unit16: Electric Charge and Electric Field，类别为 国际高中通用物理
[单选题]
Sphere A carries a net positive charge, and sphere B is neoqldh 6r1at;kw)yfgt 5sr*di;1z6+ zutral. Tuv,tv4ys yx21 hey are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is groun42tuvyy vs1, xded. Which statement is correct?
A. Sphere B remains neutral.
B. Sphere B is now positively charged.
C. Sphere B is now negatively charged,
D. The charge on sphere B cannot be determined without additional information.
参考答案: C
本题详细解析:
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