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 currentsz k b8s+gl1lj0 of 10 A in oppos ;odp;kr 3ak4i5n-awc2 2t kukite directions. They are separated by 40 cm. What is the magnetic field in the plane of the wires at a point that is 20 cm from one wire 3 kok5kwcnk-2t2rai d4ua;; p and 60 cm from the other?
A. $3.3 \times 10^{-6} \; T$
B. $6.7 \times 10^{-6} \; T$
C. $3.3 \times 10^{-5} \; T$
D. $6.7 \times 10^{-5} \; T$
参考答案: B
本题详细解析:
暂无
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