基本電學 - 考試

By Linda
at 2014-05-14T15:51
at 2014-05-14T15:51
Table of Contents
[問題] 應考資格、各種國考疑難雜症等,以有正確作法、答案者為主
(不包括書裡的疑問)。若問題如人生規劃、讀書計畫等,無一
定作法、答案者,請用閒聊選項。
題目:
1.一電子順著電場方向移動 則其位能(增加) 電位(下降)
2.一正電荷順著電場方向移動 則其位能(減少) 電位(下降)
解答1.正電荷順著電場方向移動,因為同性相斥,正電荷釋放能量,位能減少。
電位與距離成反比,故距離越來越遠時,電位下降。
想請問電位與電場方向無關嗎?
--
Tags:
考試
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