[討論] 基電峰值探討
一題R-L-C串聯諧振電路中,求電容上的峰值電位差
我們可以知道要求得C上的電壓值是利用
Vc = I * Xc = Q * E
題目給了電壓最大值Vm, 但是題目字面上要求的是〝峰值電壓〞為何?
那就把 Q算出來再乘以Vm ,應該就是答案
但是txb函授卻說,一般我們在交流電路中,電壓值都會用有效值來呈現,
除非題目特別要求其他數值,此題並沒有要求求出最大峰值,所以以Vrms來代。
但是公職王的詳解卻是直接代 Vm 值
想問各位版友,這個峰值電壓到底需不需該代Vm值還是Vrms值呢?
(以101養成班計算第3題為例)
--
※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 122.254.42.32
※ 文章網址: https://www.ptt.cc/bbs/Gov_owned/M.1442564110.A.0E5.html
→
09/18 17:07, , 1F
09/18 17:07, 1F
→
09/18 17:08, , 2F
09/18 17:08, 2F
→
09/18 17:09, , 3F
09/18 17:09, 3F
→
09/18 17:10, , 4F
09/18 17:10, 4F
這沒很難懂,只是txb的函授算到這種題目時都用Vrms來算,沒有轉成Vm
為什麼呢我上面就有說了,所以和公職王的答案會有差,怎會有人覺得答案一樣...
→
09/18 17:10, , 5F
09/18 17:10, 5F
→
09/18 17:10, , 6F
09/18 17:10, 6F
→
09/18 17:10, , 7F
09/18 17:10, 7F
→
09/18 17:11, , 8F
09/18 17:11, 8F
→
09/18 17:11, , 9F
09/18 17:11, 9F
→
09/18 17:12, , 10F
09/18 17:12, 10F
→
09/18 17:13, , 11F
09/18 17:13, 11F
推
09/18 17:13, , 12F
09/18 17:13, 12F
→
09/18 17:13, , 13F
09/18 17:13, 13F
→
09/18 17:16, , 14F
09/18 17:16, 14F
→
09/18 17:20, , 15F
09/18 17:20, 15F
→
09/18 17:21, , 16F
09/18 17:21, 16F
→
09/18 17:26, , 17F
09/18 17:26, 17F
→
09/18 17:27, , 18F
09/18 17:27, 18F
※ 編輯: a904120013 (122.254.42.32), 09/18/2015 19:24:08
→
09/18 19:33, , 19F
09/18 19:33, 19F
→
09/18 19:33, , 20F
09/18 19:33, 20F
→
09/18 19:33, , 21F
09/18 19:33, 21F
→
09/18 19:34, , 22F
09/18 19:34, 22F
→
09/18 19:34, , 23F
09/18 19:34, 23F
→
09/18 19:35, , 24F
09/18 19:35, 24F
→
09/18 19:35, , 25F
09/18 19:35, 25F
→
09/18 19:35, , 26F
09/18 19:35, 26F
→
09/18 19:37, , 27F
09/18 19:37, 27F
→
09/18 19:40, , 28F
09/18 19:40, 28F
→
09/18 19:42, , 29F
09/18 19:42, 29F
噓
09/18 19:42, , 30F
09/18 19:42, 30F
→
09/18 19:42, , 31F
09/18 19:42, 31F
→
09/18 20:30, , 32F
09/18 20:30, 32F
→
09/18 20:32, , 33F
09/18 20:32, 33F
推
09/18 21:36, , 34F
09/18 21:36, 34F
→
09/18 22:06, , 35F
09/18 22:06, 35F