本题目来源于试卷: Physics Unit20: Magnetism，类别为 国际高中通用物理
[单选题]
At double the distance from a lonpz fj (.8hmwv74c4q 6e7dgrex57 kgn v8 cef c/r 936mupiu5szg current-carrying wire, the strength of the magnetic field produced be3s6rm/98 fzipcc u5uy that wire decreases to
A. 1/8 of its original value.
B. 1/4 of its original value.
C. 1/2 of its original value.
D. none of the given answers
参考答案: C
本题详细解析:
暂无
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