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30瓦的灯一天多少度电

更新时间: 2022-01-09 10:26:00     

0.72度。1000瓦*1小时=1度;30瓦*1小时=0.03度;0.03度*24小时=0.72度。W=P*t=30W*3600s=108000J=0.03kwh=0.03度电/每小时。

“度”是日常生活中对电能的计量单位的简称,1度=1kW.h(千瓦时),千瓦时是电功的单位,符号:kW-h,计算公式为功率乘以时间。

关键词: 多少

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