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 cubic block of aluminum rests 5r6xil;p +ijtx1.hf yon a wooden table in a regionr5-lq)vxuv3 kb vs8 d* where a uniform electric field is directed straight upward. What can be sa-k qu58v s*)v xlrd3bvid concerning the charge on the block's top surface?
A. The top surface is charged positively.
B. The top surface is charged negatively.
C. The top surface is neutral.
D. The top surface's charge cannot be determined without further information.
参考答案: A
本题详细解析:
暂无
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