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 on a wooden tabbzgi4 :fw3nke/j)t/gle in a region where a uniform el gz)fi:jb ntgw4/3ke /wyawk y4 j:y* /1kly;e2 +tuvm (ypghtq m/t0)ectric field is directed straight upward. Whe 0gjpty/:mw+ t(ku 4k1w;/lhy yq ay2) vymt*at can be said 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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