About electric

[Farabi]

Amphere is how much electron, and couloumb is the speed of electron right? So Amphere is the sample, and coloumb is how much sample per second right?

[dedndave]

coulumb is the unit of charge
it is used to represent how much charge is stored, usually in a capacitor or coil

the speed of an electron is always the same as the speed of light

[Farabi]

Yeah, I mean how much ampere per second right? Or it was wrong? I dont get the unit charge mean.

[qWord]

the speed of an electron is always the same as the speed of light

In the vacuum the eclectic filed is propagated with the speed of light, in mediums it is a bit slower, but close to c. The electrons are considerably slower (fortunately). In common circuits electrons move some millimeters per second.

[Farabi]

the speed of an electron is always the same as the speed of light

In the vacuum the eclectic filed is propagated with the speed of light, in mediums it is a bit slower, but close to c. The electrons are considerably slower (fortunately). In common circuits electrons move some millimeters per second.

So it some kind like LIFO right? Last In First Out?

[qWord]

So it some kind like LIFO right? Last In First Out?

sorry, I can't see the relation ship.
You should read a book about physics or electronics basics - I'm sure this is bettern than collection fragments of information through the internet.

[vanjast]

Electron speed in a circuit is 'drift speed' which I think is slower than lightspeed (c)

Amperes are the amount of charge per second (coulombs per second), which can amount to electrons per second, OR if you wish, Positrons(+ve e's) or +ve(or -ve)  Protons per second. This all depends on what type of current you want to measure.
Now an electromagnetic field (magnetism) AFAWK is only formed by moving charges. A stationary charge always has a static electric field, but no electromagnetic field.
How and why this happens, I THINK, is still out for discovery as it takes you into the realms of sub-atomic particles, of which, plenty have been invented.
:8)

[qWord]

Now an electromagnetic field (magnetism) AFAWK is only formed by moving charges.

Ferromagnetism

[MichaelW]

http://hyperphysics.phy-astr.gsu.edu/hbase/electric/ohmmic.html

[vanjast]

Now an electromagnetic field (magnetism) AFAWK is only formed by moving charges.

Ferromagnetism

Ja, I was refering to electromagnetism, but yes one can create 'permanent' magnets with ferrous materials.

[Farabi]

Electron speed in a circuit is 'drift speed' which I think is slower than lightspeed (c)

Amperes are the amount of charge per second (coulombs per second), which can amount to electrons per second, OR if you wish, Positrons(+ve e's) or +ve(or -ve)  Protons per second. This all depends on what type of current you want to measure.
Now an electromagnetic field (magnetism) AFAWK is only formed by moving charges. A stationary charge always has a static electric field, but no electromagnetic field.
How and why this happens, I THINK, is still out for discovery as it takes you into the realms of sub-atomic particles, of which, plenty have been invented.
:8)

:U Thanks, now I get it.