本题目来源于试卷: Physics Unit20: Magnetism，类别为 通用国际物理
[单选题]
Two long parallel wires carry cuyxmi5dn/ili en8ty*9i 8 0-sy rrents of 20 A and 5.0 A in opposite dir3kq.arej sl2 6jw (ax4ections. The wires are separated by 0.2r4ex kwj (j.6s3laq 2a0 m. What is the magnetic field midway between the two wires?
A. $1.0 \times 10^{-5} \; T$
B. $3.0 \times 10^{-5} \; T$
C. $4.0 \times 10^{-5} \; T$
D. $5.0 \times 10^{-5} \; T$
参考答案: D
本题详细解析:
暂无
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