单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,*,主干回顾 夯基固源,考点透析 题组冲关,课时规范训练,1/56,2/56,3/56,第1节电流电阻电功电功率,4/56,自由电荷,电压,正电荷,5/56,导体对电流妨碍作用,长度,横截面积,6/56,导电性能,增大,减小,7/56,电压,电阻,8/56,9/56,电场力,UIt,快慢,UI,热量,10/56,11/56,12/56,13/56,14/56,15/56,16/56,17/56,18/56,19/56,20/56,21/56,22/56,23/56,24/56,25/56,26/56,27/56,28/56,29/56,30/56,31/56,32/56,33/56,34/56,35/56,36/56,37/56,38/56,39/56,40/56,41/56,42/56,43/56,44/56,45/56,46/56,47/56,48/56,49/56,50/56,51/56,52/56,53/56,54/56,55/56,课时规范训练,56/56,