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]
Two long parallel wires carry currenkj e 15c(w/ 77 gneyuon-hhy8nts of 10 A in opposite directions. They aren(7ywu5 echoykn 8g/n-j he17 +u+dr x lmas;2 separated by d l+2uxma+ ;rs40 cm. What is the magnetic field 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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