想問下一千火牛,
佢最高輸出500W
咁係一個鍾用500W定係1秒定係1分鍾??
同埋1000W 係咪 = 1度電???
有關電既一d問題
2010-01-23 7:46 pm
回答 (3)
2010-01-25 8:06 am
✔ 最佳答案
最高輸出500W係電功率Power = W, 冇得計時間既
1度電係能量 / 電能Energy = kW/h
計算法如下 :
1度電 = 1kW/h = 500W x 2小時
1度電 = 1kW/h = 100W x 10小時
1度電 = 1kW/h = 10W x 100小時
1度電 = 1kW/h = 1000W x 1小時
1度電 = 1kW/h = 2000W x 0.5小時
1度電 = 1kW/h = 10000W x 6分鐘
2010-01-26 12:43 am
make it simple,,
1W = 1J/s
if 500W,means,500J used in one second,
1000W not equal to 1kWh(一度電).
一度電(kWh) means one kilo-watt hour,
definitely mean 1000W(1kW)appliance continously use 1hour.
since 1W = 1J/s
1kWh = 1000Wh=1000Jh=1000J(3600s)=3600000J,
So therefore,1kWh = 3600000J = 3.6MJ
1W = 1J/s
if 500W,means,500J used in one second,
1000W not equal to 1kWh(一度電).
一度電(kWh) means one kilo-watt hour,
definitely mean 1000W(1kW)appliance continously use 1hour.
since 1W = 1J/s
1kWh = 1000Wh=1000Jh=1000J(3600s)=3600000J,
So therefore,1kWh = 3600000J = 3.6MJ
2010-01-23 7:50 pm
500W 係指耗電量
當佢用了一小時
500W x 1 hour = 500Wh
1000Wh
1000Wh = 1度電
當佢用了一小時
500W x 1 hour = 500Wh
1000Wh
1000Wh = 1度電
收錄日期: 2021-04-26 14:02:28
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100123000051KK00495