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在电学实验中变阻器有两种常用的接法，即限流式和分压式．如果从阻值角度进行选择，当被测电阻与变阻器电阻较接近时用限流接法，被测电阻远大于变阻器电阻时用分压接法．在分析其原因的过程中人们通常只从被测电阻上电压变化范围和电压的变化是否线性考虑，而忽视了变阻...
There are two commonly used varistors in electrical experiments: current limiting and voltage dividing. If you select from the resistance point of view, when the measured resistance and varistor resistance are close when using current limiting connection method, the measured resistance is much larger than the varistor resistance when using partial pressure connection method. In the process of analyzing the reason, people usually only consider whether the voltage change range and voltage change on the measured resistance are linear, and ignore the variable resistance...