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 wi5jp0;g7o lpc,pb/a3zs hp9ga m;p; xo res carry currents of 10 A in opposite directionfv y d,9ipzs0zq8+f:1 /bwko is. They are separated by 40 cm. What is the magnetic fiel +,1f/wzz80sv9q p:oby ifdkid in the plane of the wires at a point that is 20 cm from one wire 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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