F.5 Physics question
回答 (1)
2007-01-22 8:00 pm
✔ 最佳答案
P = V^2/R where V is the voltage, and R is resistent, lower voltage lowers the power output of the electrical appliance.In HK, the voltage is 220V, you need a voltage transformer in order to use the electrical appliance which is not 220V.
參考: studied AL Phy
收錄日期: 2021-04-23 16:34:17
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070119000051KK02077