高中物理第二章直流电路学生实验：测定金属的电阻率同时练习使用螺旋测微器和游标卡尺课件教科版.ppt

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,*,*,刻度格数,(,分度,),刻度总长度,每小格与,1 mm,的差值,精确度,(,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,次数,1,2,3,4,5,6,7,U,/V,0.10,0.30,0.70,1.00,1.50,1.70,2.30,I,/A,0.020,0.060,0.160,0.220,0.340,0.460,0.520,