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Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 已解決
Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 已解決 
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基本電學 問題
Oct 4th 2014, 02:41

1.有一抽水馬輸出功率為600瓦特，若其效率為80%,則其損失為多少瓦特??
0.8=600/600+Ploss
ans:ploss=150w

2.若依電熱水器有20歐姆之電阻值,通已110福特之電壓,欲使一公的水游25度加熱至
100度c,需多少時間?
ans:
0.24*110^2/20*t=1000*1*(100-25)
=516.5秒我算出51.6........多

請問計算過程要怎算呢感謝

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