# Free unlimited electricity in space?

• ARAVIND113122
In summary, the idea of using a changing magnetic field to produce unlimited electricity in space is not a viable solution to Earth's energy problems. While it is true that moving a magnet past a wire can induce a current, this system would ultimately function like a battery, requiring more energy to spin up the magnet than it can produce. Adding complexity and external torque would not increase the output-to-input ratio, and the limitations in space are similar to those on Earth.
ARAVIND113122
Free unlimited electricity in space??

A Changing Magnetic Field Produces Electricity. Suppose we build a huge coil in space and place a strong magnet in between.We then provide an external spin to the magnet.In space,there is no opposing force.thus,according Newton's first law,the magnet will keep spinning and we can harness electricity for as long as we want.
wouldn't that solve all the energy problems on earth??

ARAVIND113122 said:
A Changing Magnetic Field Produces Electricity. Suppose we build a huge coil in space and place a strong magnet in between.We then provide an external spin to the magnet.In space,there is no opposing force.thus,according Newton's first law,the magnet will keep spinning and we can harness electricity for as long as we want.
wouldn't that solve all the energy problems on earth??
Moving a magnet past a wire will induce a current in the wire. Ultimately this is how you will "harness" the electricity.

However, electricity moving through a wire produces an that opposing magnetic field. i.e. your freely-spinning magnet will experience a resistance and will rapidly slow down.

What you have there is a battery, storing angular momentum, that you can convert into electricity until it stops spinning.

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thanks a lot sir!
but this means that if keep giving the magnet additional spin by some external device,then we can store the angular momentum to store huge amounts of energy in a battery.this can in turn be used to power,say,space stations, right??

ARAVIND113122 said:
thanks a lot sir!
but this means that if keep giving the magnet additional spin by some external device,then we can store the angular momentum to store huge amounts of energy in a battery.this can in turn be used to power,say,space stations, right??

It will take energy to spin up the magnet. In point of fact, it will take more energy to spin up the magnet than the amount of energy you will get out of it (because all real systems have some loss due to friction and heat).

So you haven't actually made a source of energy.

Again, think of a battery, like a 9V rechargeable battery. You can power a device (like a cooling fan) from a battery for as long as the battery lasts. But if you want to keep your battery topped up, you need to have it hooked up to a recharger.

But look what you've got - your fan is now simply powered by whatever is powering the recharger - the battery is an extraneous part of the circuit. You could remove it.

Your magnet spinning in space needs a source of energy to keep it going. But as soon as you introduce that source of energy, you can simply power Earth from that source, and get rid of the magnet, which is not accomplishing anything.

But Sir, what if you provide an initial torque to the magnet,wait for it to stop spinning,and then again provide torque and repeat the process?? I know that an external source is required to do this.But can this,in any way,increase the output to input ratio[you don't need to keep providing energy,just do it when the spin stops]?Or will it be the same?

The conservation of mass-energy says you can't create energy out of nothing. No matter how you rig up magnets and wires or when and how you spin up the device, it will always take more total energy externally applied to spin the device than you can get out of it in the form of electricity.

ARAVIND113122 said:
But Sir, what if you provide an initial torque to the magnet,wait for it to stop spinning,and then again provide torque and repeat the process?? I know that an external source is required to do this.But can this,in any way,increase the output to input ratio[you don't need to keep providing energy,just do it when the spin stops]?Or will it be the same?

You are succumbing the classic perpetual motion tweaking-to-infinity folly. The assumption that adding one more bit of complexity will cause it to get more efficient. No, each addition of complexity causes it to get less efficient.

Regardless, it will never be more efficient than 1. i.e. you will never get more energy out of it than you put in.

If it takes 1 million Joules to get it up to speed, the best you can hope for (even in a perfect computer simulation) is 1 million Joules output. If you keep adding torque every time it slows down (say, another .5 million Joules) then you will get another .5 million Joules out of it.

Your device is not making any energy; it is only converting input energy to stored angular momentum, then converting it back. It's a zero sum.

And fyi, the limitations in space are almost exactly the same as those on earth. Being in space does essentially nothing for you:
1. Being in space doesn't offer much less friction than being on earth.
2. Friction isn't a large component of lost power anyway: most generators are over 95% efficient.

Thank you very much!That was really helpful!

## 1. How is free unlimited electricity generated in space?

Free unlimited electricity can be generated in space through the use of solar panels, which convert sunlight into electrical energy. These panels are often positioned on spacecraft or space stations to capture the maximum amount of sunlight.

## 2. Can free unlimited electricity be used on Earth?

While the technology to generate free unlimited electricity in space exists, it is currently not feasible to transfer this energy to Earth. The cost and logistics of building and maintaining a large-scale energy transmission system from space to Earth make it impractical at this time.

## 3. What are the benefits of using free unlimited electricity in space?

The use of free unlimited electricity in space can greatly reduce the cost of space missions, as it eliminates the need for costly fuel and reduces the weight of spacecraft. It also allows for longer missions and the possibility of sending more advanced equipment into space.

## 4. Are there any drawbacks to using free unlimited electricity in space?

One potential drawback is the dependency on sunlight, as solar panels may not be as efficient in areas with less sunlight or during periods of extended darkness. Additionally, the initial cost of building and launching solar panels into space can be expensive.

## 5. How does free unlimited electricity in space impact the environment?

Using free unlimited electricity in space has a minimal impact on the environment, as it does not produce any emissions or waste. However, the production and disposal of the solar panels themselves can have a small environmental impact.

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