Ok this is a really silly question, but I was really curious as to why this wouldnt work. I'm just starting my electricity and magnetism course, so I really dont know much about electricity. I know this is not possible, but why?
closed as off topic by user68 Jan 20 '11 at 9:42
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Sorry, but your self charging laptop can not work since it will violate the second law of thermodynamics. A computer processes information and during computation it generates heat. This heat is dissipated through the cooling system. You need continuous supply of usable energy from an external source to run the laptop.
In general, the second law of thermodynamics asserts that it is impossible to create a perpetual motion machine of the second kind. All real machines have efficiency less than 100% which means output power is less than input power. The difference is lost/ wasted as heat or other useless forms of energy. You must have noticed your laptop's temperature is high and making noisy sound during a heavy computation.
I hope you got the point.