Science Nerds: Could Jupiter's Magnetic Field be harvested for energy?

[BrianSoddingBoru4]

Since it's science fiction, why bother making the power source plausible? Artificial gravity isn't plausible, nor phasers, transporters, light sabres, and so on and so on.

Since you're setting this far into the future, it stands to reason that there would be some significant scientific advancements during that time. Just postulate a synthetic element (you have my blessing to call it 'borudium') that transforms magnetic fields directly into usable electricity.

Boru

Because it's Sience Fiction, not fantasy
It should stick to the known laws of physics or possibly add something new and explore the possibilities
(that's why I hate Star Wars.... space craft flying and banking like planes in an atmosphere, it's just wrong! Also super high tech Light Sabers that look and act like illuminated swords)

But it's not reasonable to imagine that, in 'hundreds of thousands of years', we wouldn't have a better understanding of the laws of physics, and the technologies that always follow.

All chemical elements have a half-life. In some of these, the decay is emitted as radiation. Why is it so fantastical to imagine a synthesized element that decays as electricity?

Boru