一电动机线圈的电阻为1欧,当线圈两端所加的电压为2v时,电流为0.8A,电动机正常工作.求1min所耗电能.
人气：297 ℃ 时间：2019-08-18 16:04:16
解答
p=0.8*0.8*1*1/60=0.01wh
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