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]
A positive object touches a neutral electroscope, andt (xbw4xozefhf,41- a the leaves sepat(f3*eozh fwmi a/ t45rate. Then a negative object is brought near the electroscope, but df3mfw to4*hei/at5 z (oes not touch it. What happens to the leaves?
A. They separate further.
B. They move closer together.
C. They are unaffected.
D. cannot be determined without further information
参考答案: B
本题详细解析:
暂无
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