electricity?
2015-09-01 4:16 am
your toaster has power cord with a resistance of 0.020omhs connected in series with a 9.6 nichrome heating element .if the potential difference between the terminals of the toaster is 120 v , how much power is dissipated in (a) the power cord and (b) the heating element
回答 (1)
2015-09-01 4:35 am
✔ 最佳答案
Total dissipated power P = V^2/(rc+rh) = 120^2/9.62 = 1497 watt-in the cord Pc = P(rc/(rc+rh)) = 1497/(0.020/9.62) = 3 watt
- in the heating element Ph = P(rh/(rc+rh)) = 1497/(9.60/9.62) = 1494 watt
收錄日期: 2021-04-21 13:53:09
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20150831201634AA3DuWO