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 wig mnw y)2t ,skwcd5.y4 u5u7szres carry currents of 5;b*y2 tl(h)ajnr ,rr j.0 A and 8.0 A in the opposite directa2y ;r ,)lrbtnr*(jhj ion. The wires are separated by 0.30 m. Find the 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
| 
