我想知一個無電感器的電路中(電路中有電池,電阻,量電池的電壓)
當電路斷開,為何都會有反電動勢?
因什麼才有反電動勢?
因什麼才有反電動勢
2009-09-23 10:42 pm
回答 (2)
2009-10-02 7:47 am
✔ 最佳答案
反電動勢係當你施加電壓係一啲電感元件時，元件儲存電能，當輸入電壓斷開時，元件可以反向輸出電能，常見電感元件有電容同線圈，電阻如用線繞都有電感可能，但純碳電阻則冇電感。
2009-10-01 8:03 am
In theory, there should not be any induced emf in a non-inductive circuit. If you observed such effect, it might probably because of induction in the connecting wires, especially when these wires are long and coiled.
收錄日期: 2021-04-29 17:29:37
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090923000051KK00659