Can Moving a Magnet Near Copper Wire Generate Usable Electricity?

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Discussion Overview

The discussion revolves around the generation of electricity through the movement of a magnet near copper wire, specifically exploring the feasibility of using this principle in practical applications such as bicycle-powered generators. Participants inquire about the basic mechanics of electromagnetic induction and the conditions necessary for generating usable electrical current.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Homework-related

Main Points Raised

  • One participant questions whether moving a magnet parallel to copper wire can generate usable electrical charge, suggesting that it might be too weak for practical purposes.
  • Another participant corrects the initial claim, stating that the magnet should move perpendicular to the wire for effective induction.
  • A participant describes the operation of a bicycle-powered generator, indicating that pedaling turns magnets to generate electrical current in surrounding copper wire.
  • Some participants express uncertainty about the simplicity of the concept and seek clarification on the power requirements for practical applications.
  • There is mention of the challenges associated with generating sufficient power for larger needs versus smaller applications, such as lighting a bicycle light.
  • One participant notes that a bike dynamo works without the need for sliding electrical connections, which may contribute to its efficiency.

Areas of Agreement / Disagreement

Participants generally agree on the basic principles of electromagnetic induction but express differing views on the specifics of implementation and the practicality of generating usable electricity in various contexts. The discussion remains unresolved regarding the feasibility of DIY electricity generation without grid dependence.

Contextual Notes

Participants have not specified the exact power requirements for their proposed applications, leading to ambiguity in the discussion about practical versus theoretical electricity generation.

Who May Find This Useful

This discussion may be of interest to individuals exploring DIY electricity generation, students learning about electromagnetic induction, and those curious about the mechanics of bicycle-powered generators.

atgblue1
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Hey guys :) new here, Just a simple question to get started. looks like a great forum :D

Is the following statement correct or incorrect?

If I hold a normal magnet with north and south poles, and I move my hand in one direction parallel to copper wiring, will it generate an electrical charge that is "technically" usable, albeit it would be too weak for practical purposes?

Thanks for the info! I know there's probably a lot of "well" and "but" about this, I just mean on the basic practical level, would that generate "electrical current" ?

Thanks!
 
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Move your hand perpendicular to the wire. The magnetic field needs to move across the wire.

See 2:58 in this video
 
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thank you very much :)
 
OK further question, correct me if I'm wrong but do try to forgive some smaller incorrect technicalities:

A Bycicle powered electrical generator. Pedaling turns the belt which is basically making magnets inside the motor go 'round and 'round, generating electrical current in the surrounding copper wire at a fast enough rpm that it can be used for small things, Correct?
 
Generally the rotor has the wires and the magnets are fixed.
You can google this stuff easily. If you search for answers, and don't understand them, please feel free to ask questions. But at least expend a little effort first.

"How does a bicycle generator work" only gets about 190,000 results in 0.3seconds.
 
hmhm, Yes I have googled aplenty, and came to that conclusion. It just seems so simple that I feel I'm missing something. I have a particular idea in mind and I'm trying to learn enough to be able to build a basic model and see if it works. It would be an electricity generator, dare I say it, for "free" :D not free but free of the grid and completely DIY.
Every vid I've seen that gets close people are always nay-saying and spouting off fancy theories. So I wanted to see here if people jumped on it as being impossible or if basically, that's how to produce electricity.

I'll do some reading and maybe be back again :D thanks:D
 
atgblue1 said:
hmhm, Yes I have googled aplenty, and came to that conclusion. It just seems so simple that I feel I'm missing something. I have a particular idea in mind and I'm trying to learn enough to be able to build a basic model and see if it works. It would be an electricity generator, dare I say it, for "free" :D not free but free of the grid and completely DIY.
Every vid I've seen that gets close people are always nay-saying and spouting off fancy theories. So I wanted to see here if people jumped on it as being impossible or if basically, that's how to produce electricity.

I'll do some reading and maybe be back again :D thanks:D

None of your questions say how much power you need to generate. If you only need to light a bicycle light, then yes it is possible. If you need to heat or cool your house with a hand powered generator, then no thst is not practical.
 
atgblue1 said:
... looks like a great forum ...
Actually, it's a lot better than that :smile:
 
atgblue1 said:
A Bycicle powered electrical generator. Pedaling turns the belt which is basically making magnets inside the motor go 'round and 'round, generating electrical current in the surrounding copper wire at a fast enough rpm that it can be used for small things, Correct?
Yes, that's how a bike dynamo works, and it is arranged that way so there is no requirement for sliding electrical connections---no commutator or sliprings. A bike dynamo when powering lights makes the bike significantly harder to pedal. In the era when I rode to school the typical bike dynamo rating was 6.3V 2.1A. IIRC [emoji53]
 
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