推荐回答(5个)
定义:一千瓦的用电器,工作一小时,所消耗的电量就是一度 ,千瓦×小时的结果单位为度。
度是千瓦时的俗称,是电能的计量单位之一,千瓦是电功率的单位,二者关系如下:1千瓦的用电设备在1小时里所消耗的电能为1千瓦时即1度,1度=1千瓦时。
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1000W=1度电
比如你的电脑是200W,那么使用5小时就是1度电,这个200W就是电脑的功率,比如空调,你可以查看铭牌,一般会有功率,比如3000W,就是说使用1小时是1。5度电。千瓦‧时”这个单位主要用于量度电力,因为“千瓦‧时”比焦耳更容易被大众了解,并转化为电器使用时数。另一方面,焦耳相对“千瓦‧时”来讲,量度太少,不方便计算。不过,亦有公共机构在收费单上使用兆焦耳来代替“千瓦‧时”。
1 kW·h = 3,600,000 焦耳 = 3.6 兆焦耳
1度电=1千瓦小时
电器上(或者说明书上)都标有电器的功率。
公式:用电量(度)= 电器功率(千瓦)*使用间(小时)
1000W的电器使用一小时耗电1度。比如500W的电暖气,开两个小时,用电量为1度。
比如甲电器的功率是2000W( W -- 即瓦),那么它1小时用电量=2000瓦*1小时=
2千瓦*1小时=2千瓦小时=2度电;
又比如乙电器的功率是1500W,那么它4小时用电量=1500瓦*4小时=6千瓦小时=6度电;
再比如电灯泡60W,那么它1小时用电量=60瓦*1小时=0.06千瓦小时=0.06度电;
它200小时用电量=60瓦*200小时=12千瓦小时=12度电。
补充一点,在不同时段因电压不同,实际的功率不一定是标称功率,
因而用电量的计算机也只能是一个大概而已。
公式:W=UI或W=I(平方)R或W=U(平方)/R这是物理或电工学中
计算机功的公式,第一个对任何电器都是适用的,后两个只对纯电阻电路适用。
一度电就是1kw*h,也就是说一千瓦的电器用一个小时,就是一度电了。假如你家有一个100瓦的电灯炮开着,那它开10个小时才有一度电。以此类推,知道怎么算自己用了多少电了吧?
kW /h (千瓦每小时):俗称度。1kw/h=3.6×10的6次方在数值上表示功率1kw的用电器工作1h所消耗的电能。
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