本题目来源于试卷: magnet and magnetic field lines，类别为 美国物理杯赛(Physics Bowl)
[单选题]
96.27: A long straight -ng;rlf s;:m s)d9egc wire conductor is placed below a compass. When nq4.e1nw4 g+pkztq,l the conventional current in the conductor is from south to north and large, the N pole o pn4 eg1 q+z4 .wqtnlk,f the compass:
A. remains undeflected.
B. points to the south.
C. points to the west.
D. points to the east
E. has its polarity reversed.
参考答案: D
本题详细解析:
暂无
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