magnet and magnetic field lines (id: fdc418c4c)

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 straightaxm2z 6*x d,v 2p 9i:sbbdlc+i wire conductor is placed below a nei y34 axrh4l7u )he3e+ e,z0vkk+evcompass. When the conventional current in the conductor is fromlaeyk3 ,e3++4 0hev7rzkvxeu i n eh)4 south to north and large, the N pole of 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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