1.What is heat (or thermal energy) and how does it relate to temperature?
2.What is electric current and how does it flow through an electrical conductor?
3.What is an electrical potential difference and how is it measured?
收錄日期: 2021-05-01 22:04:56
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20180726085142AAXkgAJ