8.One kilowatt-hour(1 k Wh) is equal to one kilowatt (i.e,1000 W) of power acting for one hour.Recall that there are 60 seconds in a minute and 60 minutes in an hour.

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8.Onekilowatt-hour(1kWh)isequaltoonekilowatt(i.e,1000W)ofpoweractingforonehour.Recallthatthereare60s

8.One kilowatt-hour(1 k Wh) is equal to one kilowatt (i.e,1000 W) of power acting for one hour.Recall that there are 60 seconds in a minute and 60 minutes in an hour.
8.One kilowatt-hour(1 k Wh) is equal to one kilowatt (i.e,1000 W) of power acting for one hour.Recall that there are 60 seconds in a minute and 60 minutes in an hour.

8.One kilowatt-hour(1 k Wh) is equal to one kilowatt (i.e,1000 W) of power acting for one hour.Recall that there are 60 seconds in a minute and 60 minutes in an hour.
BACKGROUND:
瓦特是功率的单位,而度是电功的单位,它们之间不能相互转换.
如果在功率上再乘以一个时间,那么这个结果就是功.功的单位有焦耳和千瓦时,千瓦时就是平时所说的“度”,它们之间的关系如下：
1焦=1瓦·秒
1千瓦时=1千瓦·小时=1000瓦·小时=1000*3600瓦·秒=3600000焦
即：
1J=1W·s
1kWh=1kW·h=1000w·h=1000*3600w·s=3600000J
ANSWER:
Kilowatt-hour (kWh) is a unit of Power.1 kilowatt-hour means that it will use (or transfer) one kilowatt every hour.
We know that 1 J = 1 Watt·Second
And there are 60 seconds in a minute and 60 minutes in an hour,which means 3600 seconds in an hour.Therefore,1 kilowatt-hour= 1000 watt-hour = 1000×3600 watt-second=3,600,000 J
供参考,

一千瓦时（一度）等于以一千瓦的功率运行一个小时所消耗的能量。
回忆一下，每一分钟有60秒，每一小时有60分钟。

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