[問題] 電容概念
一個電容C充到穩定的 V0 , 對應Q0
此時,把該電容C接到一個同樣電容值為C的電容
穩態時兩電容的跨壓和對應的Q分別是多少?
這時是否符合能量守恒?
起初算算以為沒什麼
但後來愈算愈糊塗
應該是 Q = CV 不能亂用
這個定義是有前提?
只是 要假設接上前後電位差不變?
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