1. The charge on a rubbed polythene strip is typically -10^-9 C. If the charge carried by an electron is -1.6 x 10^-19 C, how many extra electrons does the polythene strip carry?
The answer is 6.25 x 10^9.
關於Electric charge的簡單物理問題
2009-11-30 7:35 am
回答 (1)
2009-11-30 5:10 pm
✔ 最佳答案
Let n be the number of electronshence, (1.6 x 10^-19)n = 10^-9
solve for n
收錄日期: 2021-04-29 17:31:16
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20091129000051KK02091