,第八章恒定电流,第2节电路闭合电路的欧姆定律,2,3,4,5,负极,正极,其他形式,导体,6,正比,反比,7,EIr,8,电源电动势,短路电流,内阻,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,Thank you for watching !,