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Old December 19th 03, 10:07 PM
Pierre
 
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Default EMF

Could someone explain to me the difference between a magnetic field and an
electrical field? I am studying for a ham license and I am having difficulty
with these 2 terms.

Thanks


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Old December 22nd 03, 11:20 PM
Harvey Babb
 
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A magnetic field is the field surrounding a magnet.
An electric field is the field produced by a voltage difference.
(Think "Static Electricity" and how it attracts dust.)

A changing magnetic field produces an electric field.
A changing electric field produces a magnetic field.

Electromagnetic radiation (Light, Radio Waves) consists of energy
disturbances that continually switch back and forth between electric and
magnetic fields. (The collapse of the electric field produces a magnetic
field. The collapse of the magnetic field produces an electric field.)

That's about as good as it gets without doing the math.


Pierre wrote:

Could someone explain to me the difference between a magnetic field and an
electrical field? I am studying for a ham license and I am having difficulty
with these 2 terms.

Thanks




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