惠斯通电桥实验中桥臂电阻的确定  

Determine the Bridge Arm Resistance of the Wheatstone Bridge

作　　者：林丽梅[1] 郭维熊 

机构地区：[1]福建师范大学,福建福州350117

出　　处：《大学物理实验》2016年第6期36-39,共4页Physical Experiment of College

基　　金：福建省自然基金项目(2013J01174);福建省教育厅基金项目(JB13023)

摘　　要：惠斯通电桥的灵敏度是影响其测量精度的关键因素。对电压法和电流法惠斯通电桥测电阻实验进行了理论探讨和实验验证,发现电桥灵敏度与桥臂电阻密切相关。提出最佳桥臂电阻的计算公式,为惠斯通电桥的精确测量提供便利。The sensitivity of the Wheatstone bridge is a key factor of its measuring precision. Investigating the Wheatstone bridge of balance judging by current or voltage with theoretical and experimental methods,it is found the closed relationship of the sensitivity and bridge arm resistance. And a calculation equation of proper bridge arm resistance is derived,which offers convenience for accurate measuring.

关 键 词：惠斯通电桥 桥臂电阻 灵敏度 

分 类 号：O4-34[理学—物理]