From: ram@zedat.fu-berlin.de   
      
   Kuan Peng  wrote or quoted:   
   >Since the energy consumption in coil A is zero, A does not transfer any   
   >energy to coil B.   
      
     Electromagnetism, especially the part with coils, isn't exactly   
     my strong suit! But if I had to take a stab at it, I'd say the   
     current in coil B creates a field that pushes back against the   
     change in current in coil A (effectively Lenz's law). So you   
     end up having to put in extra energy to keep the current rising   
     linearly, and that's the energy that gets dissipated.   
      
     Lenz's Law (1834):   
      
   |An induced current is always in such a direction as to oppose   
   |the motion or change causing it.   
      
     . Web:   
      
   |Lenz's Law ensures that induced currents flow in a direction   
   |that opposes the change in magnetic flux, promoting energy   
   |conservation.   
      
     .   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)