Trivia question to calculate

[junkhound]

-- how long does it take for say a specific individual electron to get from one end of a 10 ft wire to the other, say 100V, 10A, thru 10 AWG wire. Use dc for the example as it simplifies things.















hint - it is not c

 

[K8MHZ]

3.38 hours

 

[Besoeker]

-- how long does it take for say a specific individual electron to get from one end of a 10 ft wire to the other, say 100V, 10A, thru 10 AWG wire. Use dc for the example as it simplifies things.

If it was AC, the answer would be never............

 

[K8MHZ]

That's why it takes approx. 4 hours to purge 10 feet of speaker wire. If speaker wire isn't completely purged with DC, it is using electrons that may have been stagnant so long they become sluggish, affecting the purity of the signal coming from the amplifier.

If anyone wants one, I sell speaker wire purging units for $695 plus shipping.

 

[ggunn]

That's why it takes approx. 4 hours to purge 10 feet of speaker wire. If speaker wire isn't completely purged with DC, it is using electrons that may have been stagnant so long they become sluggish, affecting the purity of the signal coming from the amplifier.

If anyone wants one, I sell speaker wire purging units for $695 plus shipping.

I assume that they are on the shelf next to the $500 wooden volume control knob and the $5000 6' AC power cord (both real things for sale on audiophile sites).

 

[Ingenieur]

Insufficient information

v = 1/(sqrt(LC))
L and C are per unit length

once you know v
d = vt or t = d/v

 

[Smart $]

Insufficient information

v = 1/(sqrt(LC))
L and C are per unit length

once you know v
d = vt or t = d/v

What's that got to do with it?

 

[Besoeker]

What's that got to do with it?

Here's a link with a worked example.

https://en.wikipedia.org/wiki/Drift_velocity

 

[Ingenieur]

What's that got to do with it?

Everything
doesn't take 31.96 hrs to energize a device at d=10' after the switch is thrown

Closer to 0.15 nsec
ignoring device L and C

 

[Smart $]

Here's a link with a worked example.

https://en.wikipedia.org/wiki/Drift_velocity

I'm aware of what drift velocity is... but the OP said use DC for the example.

 

[Smart $]

Everything
doesn't take 31.96 hrs to energize a device at d=10' after the switch is thrown

The question did not pertain to energy transfer.

 

[Ingenieur]

The question did not pertain to energy transfer.

No shyte?
lol

 

[Ingenieur]

I'm aware of what drift velocity is... but the OP said use DC for the example.

so?
it applies to a dc field

 

[Smart $]

so?
it applies to a dc field

But not to electron movement.

 

[MAC702]

...$500 wooden volume control knob...

Does it go to 11?

 

[junkhound]

Does it go to 11?

some of them audiophiles think dey got got hearing that picks up the 1 MHz harmonics, .....dat wye dey needs silver coated wire two . ..

horror of horrors, audio nuts wont tolerate the distortion of a class D amp, but think the distortion from an AB and from tube saturation are "warmth" ... PT Barnum syndrome, eh?

 

[Besoeker]

Everything
doesn't take 31.96 hrs to energize a device at d=10' after the switch is thrown

Closer to 0.15 nsec
ignoring device L and C

The question isn't about the time to energise.
It's about the speed of a specific individual electron.
Look at the link I gave. And the worked example.

An analogy one of my lecturers gave was something like this.
"Imagine a very long tunnel completely filled with railway carriages. Push another in one end and one pops out the other end. Neither goes the full distance nor does it have go very fast."

 

[Besoeker]

I'm aware of what drift velocity is... but the OP said use DC for the example.

The link did use DC in the example. It also commented on the tiny distance the individual electron will wiggle back and forth.

 

[Besoeker]

The link did use DC in the example. It also commented on the tiny distance the individual electron will wiggle back and forth.

.......for AC.
Sorry, missed that from my previous post.

 

[drktmplr12]

Does it go to 11?

asking the real questions.