根據能量恆守定律 能量不會無緣無故出現 也不會無緣無故地消失
那能量去了那兒?
請別抄襲
精簡易明
一針見血
更新1:
吾要雞腸= =
簡單問題 唔會好難
回答 (2)
2007-02-03 9:01 pm
✔ 最佳答案
其實這是電池內的化學物正不停地發生反應有關:即使你不用電池, 惟電池內的化學物在一定的溫度 (例如室溫) 下仍會有自己的變化, 從而使得本身的濃度不斷下降. 當濃度降至使得電池再不可用時, 電池便宣佈無電了.
而其發生的電流和電能又往那裡走呢? 即使沒有連接它至電路, 但不要忘記: 電池內裡自身都是一個導體, 是可以通電流的. 於是其電流便在其身流循環不息地流, 直至無電為止.
只不過是因為化學物質起變化的速度好慢, 於其自身內的電流數值非常有限, 所以其發出的熱功率我們根本難以察覺到的.
參考: My chemical knowledge
2007-02-03 8:07 am
Battery derived its energy from the chemical reaction of the chemical substances in it. When the battery is not used, the chemical reaction still takes place but at a much much slower rate.
After a long time, when the chemical substances in the battery have all been reacted, the battery then will lose all its [electricity].
After a long time, when the chemical substances in the battery have all been reacted, the battery then will lose all its [electricity].
收錄日期: 2021-04-29 17:24:25
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070202000051KK03700