I am trying to figure out what is inductance? I calculated the inductance of a infinite length cable and I got L= uo*ln(D/r) , (external field) I know the inductance is the capacity of a circuit to maintain their conduction of current facing a variation of the current but looking only the above, the inductance increase while the distance "D" is increased? for instance at r=0.1m D=1000m L will be 0.1mH so what does it mean? 0.1mH is the inductance of the cable at 1000meters?
thanks
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