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 currents of 5.0 A andp//,p rik 5g lfj+upa8c t s6a*te6a2e 8.0 A in the opposg q2awx2xdv .)ite direction. The wires are separated by 0.30 m. Find tw)v x gqd.2x2ahe magnetic force per unit length between the two wires.
A. $2.7 \times 10^{-5} \; N$ repulsive
B. $7.2 \times 10^{-5} \; N$ repulsive
C. $2.7 \times 10^{-5} \; N$ attractive
D. $7.2 \times 10^{-5} \; N$ attractive
参考答案: A
本题详细解析:
暂无
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