Suppose you have two straight cylindrical conducting wires parallel to each other. The sameamount of current runs in the two wires but with opposite directions. You can think of the twowires as a rectangular coil with two infinite sides. The radius of the cylindrical wires is r = 0.3 cmand they are separate by a distance d = 1m in air. Calculate the coefficient of self inductance of thecoil per unit length.

For solving the problem, first, we have to determine the magnetic field in terms of current I and…

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