I have a homework problem, in which if I assume that the answer to the question in the title is True, then I get a right answer.

I do not have good arguments why it is true though.

How should I think about this?

  • $\begingroup$ When they are connected , what can you say about the voltage? Work from there. $\endgroup$
    – my2cts
    Oct 19 '19 at 19:26
  • 1
    $\begingroup$ It is two capacitors connected in parallel. $\endgroup$
    – Farcher
    Oct 19 '19 at 20:55
  • $\begingroup$ @my2cts: yes, that's good, I have derived a formula which says they are the same, I do not see it intuitively though, only from the formula $\endgroup$
    – zabop
    Oct 19 '19 at 21:02
  • $\begingroup$ @Farcher: yepp, if I connect two capacitors in parallel, their capacitances add. Why is this a parallel connection though? $\endgroup$
    – zabop
    Oct 19 '19 at 21:02
  • $\begingroup$ or how can I think of it as a parallel circuit? $\endgroup$
    – zabop
    Oct 19 '19 at 21:03

to see it intuitively just charge both toU against earth the will have a charge of Q1 and Q2 then connect then, they still have U and now together Q1+Q2 . (the capacity of the wire is neglected, otherwise u would diminish a little.


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