典型实验介绍张大同（华东师大附中，上海２０００６２）一、在线测量电阻图１【实验目的和要求】某一电路中有一电阻Ｒｘ（图１），要求测量它正常工作时的电阻．所谓在线测量就是要求测量环境和原工作环境完全相同．【实验器材】电压表、电流表、灵敏电流计、滑动变阻器... Typical experiment introduction Zhang Datong (Academy of High School of East China Normal University, Shanghai 200062) 1. On-line measurement of resistance Figure 1 【Experimental purpose and requirements】 There is a resistor Rx in a certain circuit (Figure 1), and it is required to measure the resistance during normal operation. The so-called online measurement requires that the measurement environment and the original working environment are exactly the same. [Experimental equipment]Voltmeter, ammeter, sensitive ammeter, sliding rheostat...