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 equn;p7qoto (s)icywta2:vv tf7 g 6;5fual currents. The magnitudl;q2 iwf*czy6b t m9c8e of the force between the wires is F. The current in each wire is now doubled. What is the magnitude of the new force betwec*y6ilqwt;bzcf9 2 8 men the two wires?
A. $4 \; F$
B. $2 \; F$
C. $F/4$
D. $F/2$
参考答案: A
本题详细解析:
暂无
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