User talk:Xerostomus

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Please remember to sign your messages on talk pages by typing four tildes (~~~~); this will automatically insert your username and the date. If you need help, check out Wikipedia:Questions, ask me on my talk page, or , and a volunteer should respond shortly. Again, welcome! DRAGON BOOSTER ★ 10:13, 13 February 2017 (UTC)

July 2023

Hello! I'm NebY. Your recent edit(s) to the page Farad appear to have added incorrect information, so they have been reverted for now. If you believe the information you added was correct, please cite a reliable source or discuss your change on the article's talk page. If you would like to experiment, please use your sandbox. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thank you. NebY (talk) 19:32, 26 July 2023 (UTC)

Dear NebY,

I saw on many pages:

E=(C.U^2)/2

so

2J/V^2

say et cetera:

https://www.answers.com/physics/How_many_joules_are_in_a_farad

Sincerely

jk Xerostomus (talk) 19:40, 26 July 2023 (UTC)

That is a very confused response at answers.com; I won't even try to explain it. Instead, note the straightforward answer below it. Alternatively, work through the equalities at Farad for yourself from left to right, confirm that

$${\text{F}}={\dfrac {{\text{A}}{\cdot }{\text{s}}}{\text{V}}}={\dfrac {{\text{W}}{\cdot }{\text{s}}}{{\text{V}}^{2}}}$$

and then consider that J = W⋅s . NebY (talk) 20:00, 26 July 2023 (UTC)

Dear NebY,

Well, I found out there are two contradictory equations commonly used:

E=CU^2/2 - as energy in a capacitor with two plates, which seems to be a special case, as a capacitor uses only a half of the real energy which is on it - as I understand the topic.

and

E=CU^2 as energy of a single charge, or of a charge flowing through a wire.

These equations leads to contradictory definitions of units. This confusion puzzles more people.

I had to find out what was the correct answer.

https://physics.stackexchange.com/questions/744497/confusion-involving-the-energy-stored-on-a-capacitor?rq=1

https://physics.stackexchange.com/questions/52661/how-can-you-calculate-or-convert-the-rm-wh-of-a-capacitor-whose-energy-is-g

I will look for more elaborate explanation,

anyway sorry for the confusion. :-)

Sincerely

jk Xerostomus (talk) 05:42, 27 July 2023 (UTC)