高中物理第二章电路第八节实验：测定金属电阻丝的电阻率省公开课一等奖新名师优质课获奖课件.pptx

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,*,*,*,第二章电路,1/52,2/52,3/52,4/52,5/52,6/52,7/52,刻度格数,(分度),刻度,总长度,每小格与,1 mm差值,准确度,(可准确到),10,9 mm,0.1 mm,0.1 mm,20,19 mm,0.05 mm,0.05 mm,50,49 mm,0.02 mm,0.02 mm,8/52,9/52,10/52,11/52,12/52,13/52,14/52,15/52,16/52,类型,内接法,外接法,电路图,误差原因,电流表分压,U,测,U,x,U,A,电压表分流,I,测I,x,I,V,17/52,电阻测量值,R,测,R,x,R,A,R,x,，测量值大于真实值,R,测,R,x,，测量值小于真实值,适用条件,R,A,R,x,适适用于测量,大阻值电阻,小阻值电阻,18/52,19/52,20/52,21/52,22/52,23/52,24/52,25/52,26/52,27/52,28/52,29/52,30/52,31/52,32/52,33/52,34/52,35/52,36/52,37/52,38/52,39/52,40/52,41/52,42/52,43/52,44/52,45/52,46/52,47/52,48/52,49/52,50/52,51/52,52/52,