[課業] 103原民基本電學:Realtime－2016韓劇推薦排行榜 , 2016韓劇推薦好看的 , 2016韓劇推薦必看 , 2016韓劇 , 2016韓劇排行榜前十名 , 韓劇推薦 ,

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批踢踢實業坊 Examination 板

[課業] 103原民基本電學

May 5th 2015, 21:43, by waokgla

作者waokgla (QQ)

看板Examination

標題[課業] 103原民基本電學

時間Tue May 5 21:43:28 2015

http://wwwc.moex.gov.tw/ExamQuesFiles/Question%5C103/103140_4706.pdf 第9題答案是A 我算是D 不知道那出了問題謝謝大家幫忙 -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 49.158.182.214 ※ 文章網址: https://www.ptt.cc/bbs/Examination/M.1430833410.A.686.html

→ temu2035: 我算出來是2倍，答案A沒錯 05/05 21:49

→ temu2035: 平板距離減半，電容量多一倍 05/05 21:50

推 fkdds: 平行版電容 C=εA/d 05/05 21:54

→ waokgla: 後來我知道C=ED/A 在套W=1/2CV 就可以得a這樣對嗎? 05/05 21:55

→ waokgla: W=1/2^2才對 05/05 21:57

→ temu2035: 只要看兩者電容量的比值就好，其他東西條件不變可以忽略 05/05 22:01

→ temu2035: 不用那麼麻煩去算功率，徒增時間而已 05/05 22:02

→ waokgla: 這題是算儲存能量@@... 05/05 22:03

→ temu2035: 電壓沒變，計算比值會消去啊.. 05/05 22:05

→ temu2035: 到頭來功率比值只跟電容量比值有關 05/05 22:06

→ waokgla: 感謝火車 05/05 22:15

→ temu2035: w大去年不是有考上了嗎?想跳出去吼 05/05 22:22

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