更新1:
no英文!!!!!!
為什麼乾電磁可以通電
回答 (2)
2011-01-12 3:33 am
✔ 最佳答案
It is simply because there is electroyle inside a dry cell. When it is in use, chemical reaction takes place in the electroyle. Positive ions nad electrons are moving towards the positive and negtive terminals of the cells, thus constituting an electric current and producing an emf (electromotive force).
2011-01-12 12:42 am
收錄日期: 2021-04-29 17:39:00
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110111000051KK00765