4.6_测量线性电阻的伏安特性
来源：华佗养生网
伏安法测线性电阻测量数据记录表电流表内接V/V测量值7.0044.600.0382.5E-04157.07.786E-031.222157.0±1.222156.45.0031.900.0382.5E-04156.71.0E-021.707156.7±1.707156.1I/mAΔv/V测量值的仪器误差ΔA/AR＝ （Ω）UR/R计算值UR(Ω)R±UR(Ω)修正值R’（Ω）伏安法测线性8.00 7.00 6.00 5.00 Δv/V4.00 3.00 2.00 1.00 0.00 0.00 10.00 20.00 30ΔA/Ay = 0录表电流表外接2.5016.000.0382.5E-04156.32.174E-023.398156.3±3.398155.77.0045.700.0382.5E-04153.27.886E-031.208153.2±1.208156.4量程电压表7.5电流表50VmA总刻度格数150100刻度值0.050.5测线性电阻测量数据记录表y = 0.156x伏安法测线性电阻测量数据记录表U-I30.00 A/A40.00 50.00 相关参数电源电压/V7.5额定电流/mA额定电压/mV内阻/Ω内阻相对不确定度准确度等级f1------26-3075000.6URV/RVURA/RA5%5%0.50.5