Efficiency of electric generator in the vacuum of space?

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Electric generators in space can initially produce energy by harnessing rotational motion, but they do not provide "free" energy indefinitely. The magnetic field interacts with the generator's components, creating resistance that leads to a rapid decrease in rotational speed. This means that while spinning in a vacuum may allow for prolonged motion, the generator will eventually stop due to electromagnetic forces. Therefore, continuous energy generation is not feasible without an external energy source to maintain the motion. The concept of perpetual motion remains unachievable due to these physical limitations.
snickers1
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I was just thinking that if you set something spinning in space it keeps turning, so does this mean once you started an electrical generator turning would you get ‘free’ energy?? Will the force from the magnetic field eventually case the wire to stop spinning?
 
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snickers1 said:
Will the force from the magnetic field eventually case the wire to stop spinning?
Yes, very quickly.
 

Thread '3D rendering of electric field lines of a swiftly moving charge'

Happy holidays folks. So I spent some time over the Thanksgiving holidays and developed a program that renders electric field lines of swiftly moving charges according to the Liénard–Wiechert formula. The program generates static images based on the given trajectory of a charge (or multiple), and the images were compiled into a video that shows the animated field lines for harmonic movement and circular movement of a charge (or two charges). Video: The source code is available here...
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