Timeline for Is voltage the speed of electrons?
Current License: CC BY-SA 3.0
31 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jul 7, 2020 at 10:53 | comment | added | Shashank V M | If that was the case, voltage would be measured in metres per second, not Volts. | |
| Apr 19, 2020 at 19:27 | comment | added | MeTitus | It seems electrons don't actually travel that fast, what moves fast is the chain effect youtube.com/watch?v=jbi7gJTPSXk | |
| Jul 2, 2019 at 8:27 | answer | added | Dirk Bruere | timeline score: 0 | |
| Aug 30, 2016 at 9:21 | comment | added | Incnis Mrsi | Astonishingly, no one cared for clarification about pressure. Voltage is like gauge pressure (difference in pressure). Electric potential would be an analog of barometric pressure had it some absolute reference point. | |
| Jul 14, 2016 at 12:07 | comment | added | Karlo | Voltage is an 'effort variable' and current a 'flow variable'. | |
| Jul 14, 2016 at 11:52 | answer | added | Thomas Weller | timeline score: 1 | |
| Jul 13, 2016 at 15:13 | comment | added | leftaroundabout | In high-energy physics, “speed” is often sloppily used as a synonym for kinetic energy (of course this isn't really right: energy increases quadratically with speed, and even more in the relativistic range), and the kinetic energy is measured in electron-volts. However, this is only applicable to free particles in a vacuum tube/tunnel – in a metallic conductor, the kinetic energy is pretty much completely negligible. | |
| Jul 13, 2016 at 13:52 | comment | added | old_timer | Voltage is the water in the water tower, how much and how high above where you are using it determines your potential energy. The water would be the electrons in this case. Once it starts flowing the flow of the water is the current like the electrical current of the flow of electrons. And you have resistance in the pipes and elsewhere in the system just like you would with electricity, and the combination of the energy of the water in the tower, the resistance and the resulting flow are like voltage current and resistance in electricity, you cant change one without affecting the others. | |
| Jul 13, 2016 at 7:01 | comment | added | Tobias Kienzler | You might be interested in vacuum tubes, most notably the x-ray tube. The voltage between cathode and anode accelerates electrons to an energy of voltage*electron-charge. Also note that 1 A = 1 C/s while 1 V = 1 J/C, i.e. while current denotes charge per time (as you mentioned), voltage simply gives you the energy that charge has. | |
| S Jul 13, 2016 at 4:57 | history | suggested | Marc.2377 | CC BY-SA 3.0 |
removed redundant portion, added relevant tag
|
| Jul 13, 2016 at 1:35 | review | Suggested edits | |||
| S Jul 13, 2016 at 4:57 | |||||
| Jul 12, 2016 at 19:04 | history | protected | W5VO | ||
| Jul 12, 2016 at 18:26 | comment | added | nidhin | Current is not the amount of electrons passing through a wire. Instead it is the amount of charge passing through the wire per unit time. | |
| Jul 12, 2016 at 18:10 | answer | added | Ben Miller | timeline score: 3 | |
| Jul 12, 2016 at 17:18 | history | tweeted | twitter.com/StackElectronix/status/752915127150735360 | ||
| Jul 12, 2016 at 17:13 | comment | added | Dave Cousineau | electrons want to be evened out (more accurately is to say that they repel each other). if you pile a bunch of them up in one place, and have an absence of them near to it, they will really really "want" to move to the empty place. the bigger the difference between the presence of them in one spot, and the absence of them in the other, the more they will "want" to move. the "wanting to move" is the voltage (as others said, pressure). if this "wanting to move" gets strong enough, the charge can travel through something it would normally not be able to, like a lightning bolt through the air. | |
| Jul 12, 2016 at 17:06 | comment | added | Criticizing Israel not allowed | Voltage is more like the pressure of electrons. | |
| Jul 12, 2016 at 17:00 | answer | added | Euan M | timeline score: 2 | |
| Jul 12, 2016 at 16:27 | vote | accept | money-printer | ||
| Jul 12, 2016 at 13:24 | answer | added | Tony GR | timeline score: 0 | |
| Jul 12, 2016 at 13:04 | answer | added | Elbehery | timeline score: 37 | |
| Jul 12, 2016 at 12:14 | answer | added | Andy aka | timeline score: 3 | |
| Jul 12, 2016 at 11:59 | answer | added | Photon001 | timeline score: 5 | |
| Jul 12, 2016 at 11:49 | answer | added | Simon B | timeline score: 2 | |
| Jul 12, 2016 at 11:23 | answer | added | FiddyOhm | timeline score: 2 | |
| Jul 12, 2016 at 11:18 | answer | added | pjc50 | timeline score: 32 | |
| Jul 12, 2016 at 11:06 | comment | added | pjc50 | The speed of electrons travelling outside a wire, such as in a particle accelerator, is often quoted in electron-volts for reasons I'll expand on. | |
| Jul 12, 2016 at 10:56 | answer | added | RJR | timeline score: 1 | |
| Jul 12, 2016 at 10:55 | answer | added | Antonio | timeline score: 4 | |
| Jul 12, 2016 at 10:37 | comment | added | Transistor | Voltage is more like pressure that drives the current. Speed is not the speed of the electrons (which move in mm/s) but the speed of the electric field (more like the speed of light). | |
| Jul 12, 2016 at 10:32 | history | asked | money-printer | CC BY-SA 3.0 |