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Author Topic: How do we convert electricity to magnetism?  (Read 1828 times)

Offline thedoc

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How do we convert electricity to magnetism?
« on: 13/07/2015 23:50:01 »
Benjamin C Wade asked the Naked Scientists:
   
How do we convert electricity into magnetism?

What types of energy have the highest likelihood of being interrelated in the same way that magnetism and electricity are?

What do you think?
« Last Edit: 13/07/2015 23:50:01 by _system »


 

Offline Colin2B

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Re: How do we convert electricity to magnetism?
« Reply #1 on: 14/07/2015 16:17:42 »
Benjamin C Wade asked the Naked Scientists:
   How do we convert electricity into magnetism?
If we pass an electric current through a wire it generates a magnetic field around the wire.
If you want a stronger magnetic effect you could put a number of wires close together and pass current through them. This is the principle of the coil where wires are wound together so they are side by side  magnifying the magnetic effect. Coils like these are used in electromagnets, transformers, and in electric motors and generators.
 

Offline evan_au

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Re: How do we convert electricity to magnetism?
« Reply #2 on: 15/07/2015 11:41:16 »
How about chemical (potential) energy and electric (potential) energy? Both involve transfer of electrons; this relationship is exploited in chemical batteries.

How about mechanical energy and electric (potential) energy? Both involve transfer of electrons; this relationship is exploited in a Van der Graaf generator.

But these correspondences are unlike the relationship between electric & magnetic fields; as Maxwell showed (and Einstein extended), electric and magnetic fields are essentially different characteristics of the same force.

Physicists are searching for a "Theory of Everything" which will explain the relationship between all 4 of the known forces. Some physicists speculate that all these forces were similar and related to each other at the extreme energies involved in the initial stages of the Big Bang. Unfortunately, these energy levels are far beyond what we can explore with the LHC.


 

Offline syhprum

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Re: How do we convert electricity to magnetism?
« Reply #3 on: 15/07/2015 14:58:12 »
The simple answer is by making the charge carriers move which generates a magnetic field.
 

Offline PmbPhy

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Re: How do we convert electricity to magnetism?
« Reply #4 on: 15/07/2015 15:58:40 »
Quote from: syhprum
The simple answer is by making the charge carriers move which generates a magnetic field.
That's essentially the physics by what Colin said above, i.e. the reason there's a magnetic field around a current carrying wire is that there are charged particles, i.e. electrons, moving through the wire. The metal lattice making up the wire consists of positive ions which gives the total net charge of zero.
 

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Re: How do we convert electricity to magnetism?
« Reply #4 on: 15/07/2015 15:58:40 »

 

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