Timeline for Are there some other ways to deduce resistance from current, than Ohm's Law (e.g. because why'd we assume a linear relationship?)?
Current License: CC BY-SA 4.0
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| Oct 29, 2022 at 12:57 | comment | added | mavavilj | @Steeven I find it unintuitive that the phenomenon of electricity would be linear, if it's a measure of particles. | |
| Oct 29, 2022 at 12:53 | history | edited | mavavilj | CC BY-SA 4.0 |
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| Feb 4, 2018 at 12:26 | history | edited | Qmechanic♦ |
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| Feb 4, 2018 at 12:00 | comment | added | anna v | hyperphysics.phy-astr.gsu.edu/hbase/electric/ohmmic.html | |
| Feb 4, 2018 at 11:34 | comment | added | Steeven | I do not fully understand what you are looking to find. Resistance is defined as the ratio of voltage-to-current. Sure, resistance appears in several expressions and formulas, but it always means "resistance against current flow". This is very fundamental and what we call Ohm's law, just like mass being a fundamental "resistance against acceleration" and therefore appearing in many formulas, although it is defined in Newton's 2nd law. What exactly are you looking for? | |
| Feb 4, 2018 at 10:21 | history | edited | mavavilj | CC BY-SA 3.0 |
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| Feb 4, 2018 at 10:18 | comment | added | mavavilj | @user34793 But that's already Ohm's Law. I asked whether one can deduce without it. | |
| Feb 4, 2018 at 10:17 | comment | added | mavavilj | @Steeven I wrote that only Kirchoff's laws (without Ohm's Law) seem to be useless on their own. For practical purposes. | |
| Feb 4, 2018 at 9:58 | answer | added | Massimo Ortolano | timeline score: 3 | |
| Feb 4, 2018 at 9:56 | comment | added | user34793 | Resistance is the inverse of conductivity. | |
| Feb 4, 2018 at 9:43 | comment | added | Steeven | How is Ohm's law or Kirchhoff's laws "slightly useless for practical purposes"? It is the most used laws in the first steps of electronics design. | |
| Feb 4, 2018 at 9:41 | comment | added | user137289 | One could measure ohmic heating by calorimetry, using $P = I^2R$. | |
| Feb 4, 2018 at 9:28 | comment | added | Dawood ibn Kareem | I kind of think of Ohm's Law as being the definition of resistance. I'm not sure what you'd use as your definition of resistance, if you were hoping to somehow calculate it without using Ohm's Law. | |
| Feb 4, 2018 at 9:16 | history | asked | mavavilj | CC BY-SA 3.0 |