問題詳情

54. Electric currents I1 and I2 are flowing through two parallel electric wires which are separatedapart by a distance R. What is the force per unit length between the two parallel wires?(Magnetic constant is μ0)
(A)


(B)


(C)


(D)


(E)

參考答案

答案：C
難度：計算中-1
書單：沒有書單，新增