Timeline for Material with fairly high resistivity, but allows flow of charge
Current License: CC BY-SA 4.0
12 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 14, 2018 at 14:04 | vote | accept | minusatwelfth | ||
| May 26, 2018 at 11:39 | comment | added | minusatwelfth | Thanks again. Any ideas how would I choose/construct materials which maximise 'resistance' (not necessarily resistivity), but minimizes discharge time? | |
| May 26, 2018 at 11:33 | vote | accept | minusatwelfth | ||
| May 26, 2018 at 11:40 | |||||
| May 24, 2018 at 12:36 | comment | added | Spehro 'speff' Pefhany | Yes. It can be simulated with a program such as COMSOL. If you have the required information to build a model. | |
| May 24, 2018 at 5:13 | comment | added | minusatwelfth | does discharge time depend on contact surface area at all? | |
| May 24, 2018 at 5:04 | comment | added | minusatwelfth | What about for more complicated objects? Something involving integrals perhaps | |
| May 24, 2018 at 3:29 | comment | added | Spehro 'speff' Pefhany | Simplest: physics.udel.edu/~watson/scen103/cylinder.html | |
| May 24, 2018 at 3:21 | comment | added | minusatwelfth | Thanks, I am satisfied with your answer. One last thing, could you point me to a formula for resistance? I would like to see all the factors that affect resistance | |
| May 23, 2018 at 15:28 | comment | added | Spehro 'speff' Pefhany | \$ v(t) = V_O(1-e^{t/\tau})\$ where \$\tau = R\cdot C\$, making all kinds of possibly inappropriate assumptions. If the bulk resistivity is the main factor the charge near the contact will discharge earlier than those further away, and there won't be any easy closed form formula. | |
| May 23, 2018 at 6:31 | comment | added | minusatwelfth | Regarding your first paragraph, could you point me to the exact formula? | |
| May 23, 2018 at 6:18 | comment | added | minusatwelfth | Thanks for the response. I'm going to need to refresh my memory on capacitance and get back to you | |
| May 23, 2018 at 3:34 | history | answered | Spehro 'speff' Pefhany | CC BY-SA 4.0 |