Timeline for Does a fan draw the same amount of power when using it at different speeds?
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 10, 2018 at 11:52 | vote | accept | CommunityBot | ||
| Apr 10, 2018 at 10:43 | comment | added | Ján Lalinský | I expressed myself in a wrong way. I was thinking of the fact that when the effective current in the coil is $I$ and effective voltage $U$, average power transferred (not only dissipation into heat, but including the useful work) from power source to the appliance is $UI$ if the voltage and current are DC, but $UI.k$, which is less, if they are AC ($k$ is efficiency factor, depending on the phase shift of current from voltage). But this is not very useful in the context of the answer, so I removed that part. | |
| Apr 10, 2018 at 10:22 | history | edited | Ján Lalinský | CC BY-SA 3.0 |
deleted 151 characters in body
|
| Apr 10, 2018 at 1:26 | comment | added | user190600 | "A general result of EM induction on the coil is that large current may flow in the wires, but it dissipates much less energy than DC current would." by that do you mean that current in AC circuits are greater than DC circuits or something else? Please clarify | |
| Mar 30, 2018 at 12:59 | history | answered | Ján Lalinský | CC BY-SA 3.0 |