基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練第第2節(jié)法拉第電磁感應(yīng)定律自感和渦流節(jié)法拉第電磁感應(yīng)定律自感和渦流 基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練磁通量磁通量磁通量的變磁通量的變化量化量磁通量的變磁通量的變化率化率物理意義物理意義某時(shí)刻穿過某時(shí)刻穿過某個(gè)面的磁某個(gè)面的磁感線的條數(shù)感線的條數(shù)某段時(shí)間內(nèi)某段時(shí)間內(nèi)穿過某個(gè)面穿過某個(gè)面的磁通量變的磁通量變化化穿過某個(gè)面穿過某個(gè)面的磁通量變的磁通量變化的快慢化的快慢三個(gè)量三個(gè)量比較項(xiàng)目比較項(xiàng)目基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練2.公式公式En與與EBLvsin 比較比較 項(xiàng)目項(xiàng)目兩個(gè)公式兩個(gè)公式基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練三、通電自感和斷電自感的比較三、通電自感和斷電自感的比較 通電自感通電自感斷電自感斷電自感電路圖電路圖器材要求器材要求A1、A2同規(guī)格，同規(guī)格，RRL，L較大較大L很大很大(有鐵芯有鐵芯)兩種自感兩種自感比較項(xiàng)目比較項(xiàng)目基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練現(xiàn)象現(xiàn)象在在S閉合瞬間，燈閉合瞬間，燈A2立即亮起來，燈立即亮起來，燈A1逐逐漸變亮，最終一樣亮漸變亮，最終一樣亮在開關(guān)在開關(guān)S斷開時(shí)，燈斷開時(shí)，燈A漸漸熄漸漸熄滅或閃亮一下再熄滅滅或閃亮一下再熄滅原因原因由于開關(guān)閉合時(shí)，流由于開關(guān)閉合時(shí)，流過電感線圈的電流迅過電感線圈的電流迅速增大，線圈產(chǎn)生自速增大，線圈產(chǎn)生自感電動勢，阻礙了電感電動勢，阻礙了電流的增大，使流過燈流的增大，使流過燈A1的電流比流過燈的電流比流過燈A2的電流增加得慢的電流增加得慢S斷開時(shí)，線圈斷開時(shí)，線圈L產(chǎn)生自感電產(chǎn)生自感電動勢，阻礙了電流的減小，動勢，阻礙了電流的減小，使電流繼續(xù)存在一段時(shí)間；使電流繼續(xù)存在一段時(shí)間；燈燈A中電流反向不會立即熄滅中電流反向不會立即熄滅若若RLRA，原來的，原來的ILIA，則則A燈熄滅前要閃亮一下若燈熄滅前要閃亮一下若RLRA，原來的電流，原來的電流ILIA，則燈則燈A逐漸熄滅不再閃亮一下逐漸熄滅不再閃亮一下能量轉(zhuǎn)能量轉(zhuǎn)化情況化情況電能轉(zhuǎn)化為磁場能電能轉(zhuǎn)化為磁場能磁場能轉(zhuǎn)化為電能磁場能轉(zhuǎn)化為電能基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練考向一考向一 法拉第電磁感應(yīng)定律的應(yīng)用法拉第電磁感應(yīng)定律的應(yīng)用 基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練考向二考向二 公式公式EBlvsin 的應(yīng)用的應(yīng)用 基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練考向三考向三 自感現(xiàn)象的理解自感現(xiàn)象的理解 基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練基基礎(chǔ)礎(chǔ)知知識識梳梳理理聚聚焦焦考考向向透透析析核核心心考考點(diǎn)點(diǎn)解解讀讀課課時(shí)時(shí)規(guī)規(guī)范范訓(xùn)訓(xùn)練練隨隨堂堂知知能能演演練練