You are given two infinite, parallel wires each carrying current I. The wires are separated by a distance $d,$ and the current in the two wires is flowing in the same direction. This problem concerns the force per unit length between the wires. View Available Hint$($s$)$ attractive repulsive Correct Part B What is the force per unit length $\frac{F}{L}$ between the two wires? Express your answer in terms of I,$d,$ and constants such as ${}_0$ and $.$