Timeline for The water analogy seems to imply that power = current. Why is this incorrect?
Current License: CC BY-SA 4.0
25 events
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Dec 24, 2018 at 18:57 | history | edited | lyndon | CC BY-SA 4.0 |
added 16 characters in body
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Dec 19, 2018 at 2:20 | vote | accept | lyndon | ||
Dec 19, 2018 at 1:00 | comment | added | user2357112 | This illustrates one of the big flaws of the hydraulic analogy - now you have to understand hydraulics, too. | |
Dec 18, 2018 at 12:08 | comment | added | nigel222 | Head of water (Pressure) is equivalent to voltage, Quantity of water flowing to current. If you have ever watered plants using a hose connected to a water butt one day, and the mains water tap the next, you ought to have a good feel for this. | |
Dec 18, 2018 at 3:01 | comment | added | David White | @slebetman, check your answer with dimensional analysis. | |
Dec 18, 2018 at 1:16 | answer | added | Harper - Reinstate Monica | timeline score: 3 | |
Dec 17, 2018 at 21:00 | history | tweeted | twitter.com/StackPhysics/status/1074771333140148226 | ||
Dec 17, 2018 at 20:46 | comment | added | David Schwartz | "the more water that flows per unit of time, the more energy gets delivered to the wheel per unit of time: power = current" This reasoning is not correct. At most, that more of one means more of the other suggests that they're proportional. | |
Dec 17, 2018 at 15:44 | answer | added | Cort Ammon | timeline score: 12 | |
Dec 17, 2018 at 10:18 | comment | added | Aetol | Pressure does matter to hydraulic power, that's why water is piped from mountain dams to valley power stations. | |
Dec 17, 2018 at 8:10 | comment | added | slebetman | Actually, in the case of the water wheel, power = speed of water (voltage) x current (volume of water / unit time). No, speed != volume of water/time, it is miles per hour (or m/s if you prefer). | |
Dec 16, 2018 at 23:16 | comment | added | Criticize SE actions means ban | In the case of a water wheel, it's the amount of water flowing times how hard the water pushes the wheel. | |
Dec 16, 2018 at 23:07 | answer | added | Themis | timeline score: 2 | |
Dec 16, 2018 at 23:00 | answer | added | Whit3rd | timeline score: 42 | |
Dec 16, 2018 at 22:38 | answer | added | Flyto | timeline score: 1 | |
Dec 16, 2018 at 22:12 | answer | added | Bob D | timeline score: 2 | |
Dec 16, 2018 at 21:47 | answer | added | niels nielsen | timeline score: 22 | |
Dec 16, 2018 at 20:16 | history | edited | Qmechanic♦ |
edited tags
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Dec 16, 2018 at 19:29 | comment | added | BowlOfRed | en.wikipedia.org/wiki/Hydraulic_analogy#Equation_examples | |
Dec 16, 2018 at 19:29 | answer | added | Žarko Tomičić | timeline score: 0 | |
Dec 16, 2018 at 19:28 | answer | added | BioPhysicist | timeline score: 12 | |
Dec 16, 2018 at 19:08 | comment | added | lyndon | Thanks. Is it more clear now? | |
Dec 16, 2018 at 19:08 | history | edited | lyndon | CC BY-SA 4.0 |
Editing for clarity
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Dec 16, 2018 at 19:02 | comment | added | user196418 | Can you make your post a little more exact? Are you saying Power = Current? Please define all terms. And make sure units match up. | |
Dec 16, 2018 at 18:58 | history | asked | lyndon | CC BY-SA 4.0 |