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July 2023

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  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)Reply

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)Reply
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
 
and then consider that J = Ws . NebY (talk) 20:00, 26 July 2023 (UTC)Reply
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)Reply