Can magnets be used to creat energy???

Question

This always puzzles me!
I knw that energy cnt be created neither destroyed but if u bring two "like poles" close, they jump apart... isnt that creating kinetic enrgy????

Answer 1

Magnets are used to convert energy. I think maybe what you want to know is if you had a system with nothing but 2 like poles into it and they start to repell each other would that be createing energy from nothingness. Lets take your example and run it under a thought test. ++ + + + + as the points move away from each other was energy created and/or destroyed? Well sense the objects started to move some energy was created or converted from a charge energy into a kinetic energy :) but on the flip side was some energy converted or destroyed in some way shape or form because of this action. I would guess that the system would keep any energy in it as in no energy being destroyed and there shouldnt be any energy added to the system of course lol you took a system of nothing and added something breaking a law of physics so whos to say it wont happen again in your system... Here are some thoughts for you lets say you take unlike poles and put them into a system for how long do they travel twoards one and another? If you take a system of nothingness and add a unit with charge and then add another unit with less charge on the same polarity. Does the unit with more charge (if that can even happen) get repelled by the smaller charged unit and move away from it or does it stay in place and repell the smaller object while staying in its place. Think of it like this - -- / - -- / - -- ).

Answer 2

No...magnets cannot be used to create energy by themselves.

They can be used as an opposing magnetic field in a motor or a loud speaker, for instance, but it's the electrical current through the wire windings inside the device that produces the motion.
Magnets possess potential energy which is introduced into the magnetic material by an outside source of energy - and if the like poles are close enough, this potential energy will indeed become kinetic energy.
If magnets alone could create energy, a perpetual motion machine would soon be forthcoming.

Answer 3

yes, explain how a credit card machine works and why do info in picked up if you jsut set the card in the holder and not slide it. if the magnet is not moving no current is produced. the stripe of the card is magnitized which holds all the info from the bank in a certain pattern.

Faraday's Law states that an electric current can be generated by passing a magnet through a coil of wire.
This experiment attempted to verify Faraday's Law by using a strong heavy duty magnet, varying the
number of coil windings, and passing the magnet through the coils at different speeds to see the amount of
electric current created.

involves the use of Lenz's Law. "If the magnetic flux within a closed conducting path is changing as a function of time, a current will flow within that closed path so as to oppose that change!".
In this case let's assume that initially there is no magnetic flux through the isolated closed loop. If you then begin to move the North pole of a magnet towards the loop, the flux through the loop will increase from NO flux to flux INTO the loop. The closed loop will then feel an EMF so as to cause a current to flow within the loop that will try to maintain the status quo, which is NO flux. That means that the loop will gnerate a flux directed OUT of the loop. To generate a flux OUT of the loop will require that a current COUNTER-CLOCKWISE will flow in the loop [according to the "Right Hand Rule"]. The sum of the flux OUT caused by the induced EMF plus the newly introduce flux IN by the permanent magnet will add up to ZERO, the original state of the loop before the permanent magnet was introduced.

Answer 4

The answer is NO!

You have to look at this very closely. When you put to like poles together what you have done is turned potential energy into kinetic energy. The potential energy is just stored energy from physically moving the magnets together in that fashion. When analyzing systems like this you have to look at the entire system.

Answer 5

Didn't you have to use energy to bring those poles together? What you are seeing is a release of energy, not a creation of it. You can create energy though. All you have to do is reduce the mass of something on the atomic level. This is what happens on the sun and in an atomic bomb.


The rubber band was a good analogy.

Answer 6

In answer to your question.
If energy is used to power the, say
electromagnets, or to charge the little lego magnets, then this energy gets used up, either over time, like in a lego magnet, or in a few seconds with an electromagnet.
So, where does this energy go? Not much in heat, i can tell you that..This energy obviously gets used to sustain the magnetic field which as you say, can be used to push things apart.
or be used as a simple motor or dynamo.
Have you heard of the new magnetic levitation train, or MagLev for short???

Answer 7

What your diagrams in all possibility do no longer account for is resistance and drag interior the moving areas of your perpetual action device... which you will in all possibility discover outweigh any kinetic ability gained from the opposing poles of the magnets. Magnets are used to make ability, or extra-so convert kinetic ability (circulate) into electric ability (electricity) as in a generator.

Answer 8

No because energy can neither be created nor destroyed. The energy just changes from one knid to a different kind.

Answer 9

Actually it's just storing and releasing energy, like a rubber band.

Answer 10

Yes.