本题目来源于试卷: Physics Unit20: Magnetism，类别为 通用国际物理
[单选题]
At what distance from a long straight wire carrying a curre6msu do 6r a5sfm77l;mnt of 5.p(qs9b+3fc98 w yc wibv g*g4k2n hv7v0 A is the magnitude of the magnetic fivc(p9h7q2 vg*sgif w8bw43+ c9bnvy keld due to the wire equal to the strength of the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?
A. $1.0 \; cm$
B. $2.0 \; cm$
C. $3.0 \; cm$
D. $4.0 \; cm$
参考答案: B
本题详细解析:
暂无
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