電場(chǎng)能的性質(zhì)

1、電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)結(jié)結(jié) 束束 課前回顧課前回顧基礎(chǔ)速基礎(chǔ)速串串課堂釋疑課堂釋疑一站突一站突破破課后演練課后演練對(duì)點(diǎn)設(shè)對(duì)點(diǎn)設(shè)計(jì)計(jì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)結(jié)結(jié) 束束 課前回顧課前回顧基礎(chǔ)速基礎(chǔ)速串串課堂釋疑課堂釋疑一站突一站突破破課后演練課后演練對(duì)點(diǎn)設(shè)對(duì)點(diǎn)設(shè)計(jì)計(jì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)結(jié)結(jié) 束束 課前回顧課前回顧基礎(chǔ)速基礎(chǔ)速串串課堂釋疑課堂釋疑一站突一站突破破課后演練課后演練對(duì)點(diǎn)設(shè)對(duì)點(diǎn)設(shè)計(jì)計(jì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)結(jié)結(jié) 束束 課前回顧課前回顧基礎(chǔ)速基礎(chǔ)速串串課堂釋疑課堂釋疑一站突一站突破破課后演練課后演練對(duì)點(diǎn)設(shè)對(duì)點(diǎn)設(shè)計(jì)計(jì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)

2、結(jié)結(jié) 束束 課前回顧課前回顧基礎(chǔ)速基礎(chǔ)速串串課堂釋疑課堂釋疑一站突一站突破破課后演練課后演練對(duì)點(diǎn)設(shè)對(duì)點(diǎn)設(shè)計(jì)計(jì)判斷方法判斷方法方法解讀方法解讀公式法公式法將電荷量、電勢(shì)連同正負(fù)號(hào)一起代入公式將電荷量、電勢(shì)連同正負(fù)號(hào)一起代入公式Epq ，正，正Ep的絕對(duì)值越大，電勢(shì)能越大；負(fù)的絕對(duì)值越大，電勢(shì)能越大；負(fù)Ep的絕對(duì)值越大，電勢(shì)能越小的絕對(duì)值越大，電勢(shì)能越小電勢(shì)法電勢(shì)法正電荷在電勢(shì)高的地方電勢(shì)能大正電荷在電勢(shì)高的地方電勢(shì)能大負(fù)電荷在電勢(shì)低的地方電勢(shì)能大負(fù)電荷在電勢(shì)低的地方電勢(shì)能大做功法做功法電場(chǎng)力做正功，電勢(shì)能減小電場(chǎng)力做正功，電勢(shì)能減小電場(chǎng)力做負(fù)功，電勢(shì)能增加電場(chǎng)力做負(fù)功，電勢(shì)能增加能量守恒法能量守

3、恒法在電場(chǎng)中，若只有電場(chǎng)力做功時(shí)，電荷的動(dòng)能在電場(chǎng)中，若只有電場(chǎng)力做功時(shí)，電荷的動(dòng)能和電勢(shì)能相互轉(zhuǎn)化，動(dòng)能增加，電勢(shì)能減小，和電勢(shì)能相互轉(zhuǎn)化，動(dòng)能增加，電勢(shì)能減小，反之，動(dòng)能減小，電勢(shì)能增加反之，動(dòng)能減小，電勢(shì)能增加電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)結(jié)結(jié) 束束 課前回顧課前回顧基礎(chǔ)速基礎(chǔ)速串串課堂釋疑課堂釋疑一站突一站突破破課后演練課后演練對(duì)點(diǎn)設(shè)對(duì)點(diǎn)設(shè)計(jì)計(jì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)結(jié)結(jié) 束束 課前回顧課前回顧基礎(chǔ)速基礎(chǔ)速串串課堂釋疑課堂釋疑一站突一站突破破課后演練課后演練對(duì)點(diǎn)設(shè)對(duì)點(diǎn)設(shè)計(jì)計(jì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)結(jié)結(jié) 束束 課前回顧課前回顧基礎(chǔ)速基礎(chǔ)速串串課堂釋疑課堂釋疑

4、一站突一站突破破課后演練課后演練對(duì)點(diǎn)設(shè)對(duì)點(diǎn)設(shè)計(jì)計(jì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)結(jié)結(jié) 束束 課前回顧課前回顧基礎(chǔ)速基礎(chǔ)速串串課堂釋疑課堂釋疑一站突一站突破破課后演練課后演練對(duì)點(diǎn)設(shè)對(duì)點(diǎn)設(shè)計(jì)計(jì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)結(jié)結(jié) 束束 課前回顧課前回顧基礎(chǔ)速基礎(chǔ)速串串課堂釋疑課堂釋疑一站突一站突破破課后演練課后演練對(duì)點(diǎn)設(shè)對(duì)點(diǎn)設(shè)計(jì)計(jì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)結(jié)結(jié) 束束 課前回顧課前回顧基礎(chǔ)速基礎(chǔ)速串串課堂釋疑課堂釋疑一站突一站突破破課后演練課后演練對(duì)點(diǎn)設(shè)對(duì)點(diǎn)設(shè)計(jì)計(jì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)結(jié)結(jié) 束束 課前回顧課前回顧基礎(chǔ)速基礎(chǔ)速串串課堂釋疑課堂釋疑一站突一站突破破課后演練

5、課后演練對(duì)點(diǎn)設(shè)對(duì)點(diǎn)設(shè)計(jì)計(jì)電場(chǎng)電場(chǎng)等勢(shì)線(xiàn)等勢(shì)線(xiàn)(面面)重要描述重要描述等量異種點(diǎn)電等量異種點(diǎn)電荷的電場(chǎng)荷的電場(chǎng)連線(xiàn)的中垂線(xiàn)上電勢(shì)連線(xiàn)的中垂線(xiàn)上電勢(shì)處處為零處處為零等量同種等量同種(正正)點(diǎn)點(diǎn)電荷的電場(chǎng)電荷的電場(chǎng)連線(xiàn)上，中點(diǎn)的電勢(shì)連線(xiàn)上，中點(diǎn)的電勢(shì)最低；中垂線(xiàn)上，中最低；中垂線(xiàn)上，中點(diǎn)的電勢(shì)最高點(diǎn)的電勢(shì)最高電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)結(jié)結(jié) 束束 課前回顧課前回顧基礎(chǔ)速基礎(chǔ)速串串課堂釋疑課堂釋疑一站突一站突破破課后演練課后演練對(duì)點(diǎn)設(shè)對(duì)點(diǎn)設(shè)計(jì)計(jì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)結(jié)結(jié) 束束 課前回顧課前回顧基礎(chǔ)速基礎(chǔ)速串串課堂釋疑課堂釋疑一站突一站突破破課后演練課后演練對(duì)點(diǎn)設(shè)對(duì)點(diǎn)設(shè)計(jì)計(jì)電場(chǎng)能的

6、性質(zhì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)結(jié)結(jié) 束束 課前回顧課前回顧基礎(chǔ)速基礎(chǔ)速串串課堂釋疑課堂釋疑一站突一站突破破課后演練課后演練對(duì)點(diǎn)設(shè)對(duì)點(diǎn)設(shè)計(jì)計(jì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)結(jié)結(jié) 束束 課前回顧課前回顧基礎(chǔ)速基礎(chǔ)速串串課堂釋疑課堂釋疑一站突一站突破破課后演練課后演練對(duì)點(diǎn)設(shè)對(duì)點(diǎn)設(shè)計(jì)計(jì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)結(jié)結(jié) 束束 課前回顧課前回顧基礎(chǔ)速基礎(chǔ)速串串課堂釋疑課堂釋疑一站突一站突破破課后演練課后演練對(duì)點(diǎn)設(shè)對(duì)點(diǎn)設(shè)計(jì)計(jì)關(guān)鍵點(diǎn)關(guān)鍵點(diǎn)獲取信息獲取信息在勻強(qiáng)電場(chǎng)中在勻強(qiáng)電場(chǎng)中電場(chǎng)力為恒力電場(chǎng)力為恒力0.20受滑動(dòng)摩擦力作用受滑動(dòng)摩擦力作用電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)電場(chǎng)能的性質(zhì)結(jié)結(jié) 束束 課前回顧課前回顧基礎(chǔ)速基礎(chǔ)速串串課堂釋疑課