electromagnetism

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electromagnetism Anonymous Sun Nov 7 22:21:28 2010 No.2019400 [Reply] [Original]

Hello /sci/. I was wondering, if the first law of thermodynamics is accurate, how can magnetic attraction create an electric current, supplying infinite usable energy?

>>	Anonymous Sun Nov 7 22:24:28 2010 No.2019413 File: 25 KB, 451x300, Thermodynamics.jpg [View same] [iqdb] [saucenao] [google] >supplying infinite usable energy Do you know the SECOND law of thermodynamics?

>>	Anonymous Sun Nov 7 22:27:28 2010 No.2019431 Magnetic attraction doesn't create an electric current. You need a moving magnet and a coil, and the induction of electricity slows the movement of the magnet.

Anonymous Sun Nov 7 22:31:28 2010 No.2019455
File: 141 KB, 640x359, Insane-Clown-Posse-fuckin-magnets-how-do-they-work.jpg [View same] [iqdb] [saucenao] [google]

A changing magnetic field is required, and a static horseshoe magnet like the one you have shown wouldn't produce any electric current until you move it, or the coil.

It all depends on the magnetic flux running through the coil, really.

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