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 Techist - Tech Forum speed of electricity
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 01-26-2005, 04:52 PM #1 (permalink) True Techie   Join Date: Dec 2004 Posts: 116 speed of electricity whats the speed of the electricity flowing through roughly 100ft of copper about 1mm thick? __________________
 01-26-2005, 05:01 PM #2 (permalink) Ultra Techie   Join Date: Jun 2004 Posts: 900 very freaking fast __________________ __________________ Jesus said to him, "I am the way, the truth, and the life; no one comes to the Father but through me". -John 14:6
 01-26-2005, 05:08 PM #3 (permalink) Junior Techie   Join Date: Jan 2005 Posts: 57 At the same speed light travels through a vacuum i think? 299,792,458 Meters per second 186,282.4 Miles per second Although i think many physicists debate about this :P Moja
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Quote:
 Originally posted by Moja At the same speed light travels through a vacuum i think? 299,792,458 Meters per second 186,282.4 Miles per second Although i think many physicists debate about this :P Moja
imposible nothing (exept light) can travel as the speed of line, including electrons

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Quote:
 imposible nothing (exept light) can travel as the speed of line, including electrons
Yup, speed of electricity is nothing compared to the speed of light although I couldn't even begin to estimate how fast it goes =/

 01-26-2005, 05:35 PM #6 (permalink) Field Engineer     Join Date: Nov 2004 Location: Long Island, NY Posts: 4,697 google it __________________ A+, Network + , HP Certified Tech and MCP Specs: AMD Phenom II X6 1095T, Asus M477TD, 8GB GSkill Ripjaws DDR3 1600 7-8-7-24 1T, 128GB Crucial M4 SSD, ATi HD4650, W7, 27" HL272 Monitor
 01-26-2005, 05:44 PM #7 (permalink) Wizard Techie   Join Date: Apr 2004 Posts: 3,247 actually, I am as fast as the speed of light... maybe a little faster... anyhow, back to the question. Electric current is slow moving and actually almost sits there and vibrates (thus exciting from one electron to the other). Energy flow, on the other hand, is very fast (and yes, there IS a difference). To say how fast is rather hard, because the the speed of the energy flow is related to the value of the current... small current = low speed energy flow and vice-a-versa. Thats just one thing that affects the speed. The size of the wire (listed above) also does. To find out the speed have to know the amperes, wire diameter/radius, and how many moving electrons per cubic centimer. Once you have this the formula is: I = amperes D = wire diameter Q= moving electrons per cubic centimeter e = charge per electron cm/sec = I / Q x e x R ^2 x pi this is for DC __________________ If you argue with an idiot he will drag you down to his level and beat you with experience. I am not a fast writer. I am not a slow writer. I am a half-fast writer. -Robert Asprin
 01-26-2005, 06:53 PM #8 (permalink) Monster Techie     Join Date: Jan 2005 Location: Parents Basement...Still Posts: 1,746 so...if your traveling at the speed of light and you turn your headlights on..what happens??? hahaha......ya....lame lol. i used to know this stuff.....darnit!!! __________________ [110.7896] Getting up from chair [112.8798] Walking to fridge [118.5234] Opening Fridge [119.1439] CntdwnToExtn panic - no beer: Fridge empty!
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Quote:
 Originally posted by CntdwnToExtn so...if your traveling at the speed of light and you turn your headlights on..what happens??? hahaha......ya....lame lol. i used to know this stuff.....darnit!!!
You will see no light in front of you.

Unless you are in the horizon of a black hole.

 01-26-2005, 07:15 PM #10 (permalink) Super Techie   Join Date: Sep 2003 Posts: 374 my 6th grade science teacher told us that in the time it takes for the light to turn on after you hit the switch, the electricity can travel around the world 7 times (I think that is what he said, it was something like that, that was 6 years ago, so my memory is a little foggy) __________________ __________________ Desktop specs: AMD Athlon XP 2500+@ 200x11 - EPoX 8rda3I - Thermaltake 420watt silent PSU - 2x512MB PNY PC3200(DualChannel) - TT HSF - PNY 5900SE, 128MB DDR, 256-bit - - Toshiba SD-R5002: DVD-RW - NEC DVD-RW - 2 Antec 80mm fans - 1 Delta 92mm fan - 1 Antec 120mm fan- 1 TT 120mm fan - Windows XP Pro - WD special edition 80GB 7200 RPM- Seagate 80GB 7200 RPM 8MB cache - Onboard Sound - Onboard Ethernet Notebook specs: ACER Travel Mmate 4000LCi - Intel Pentium M 710 - 15\" XGA TFT - 512MB DDR333 - 40 GB HD - DVD-rom/CD-RW Drive - WLAN 802.11b/g - Winxp Home - Intel Extreme Graphics - Average Battery Life: 4-5 hours - 6.4 lbs

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