Needing a bit of help here. I am trying to transfer an AC signal to a straight conductor via induction. I am trying to quantify the difference in amount of transferred signal (amps) when the source of the signal is a small coil versus a parallel running straight conductor. I am thinking its basically the difference between applying the magnetic field over a small area versus a bigger area. Really looking for the equation that shows the difference and its been too long since I was doing this kind of stuff in college. Any help is appreciated.