Re: A rotating disk PARADOX??

From: Bilge (dubious_at_radioactivex.lebesque-al.net)
Date: 07/03/04


Date: Sat, 03 Jul 2004 00:30:06 -0000


 Gauge:
>Bilge:
>> curl E = (1/c)dB/dt
>>
>> Electric fields do the work.
>
>To create an EMF it is *sufficient* to have a time varying magnetic
>field, it is *not necessary*. A generator can have a constant magnetic
>field with a coil rotating in the field producing an EMF. The magnetic
>flux is then a function of time and thus, according to Faraday's law,
 
  I wrote faraday's law above. Maybe you'll recognize it if you go
find a textbook and look.

>there is an induced EMF. The work being done is by what rotates the
>coil in the magnetic field. The wire in the coil exerts a force on the
>charges and that is what does the work.
 
  What's your point aand what does that have to do with anything
I just said? Are you arguing that magnetic fields do work? If so,
look that up when you look up faraday's law.



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