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高中物理课本中学生实验“把电流表改装为电压表”是利用并联半偏法测电流表的内阻,实验思路简捷、实用.本文就并联半偏法系统误差和实验的改进问题进行分析讨论.一、实验原理及误差分析
High school physics textbook middle school experiment “convert ammeter to voltmeter ” is the use of parallel half-bias method to measure the ammeter’s internal resistance, the experimental train of thought is simple and practical.This paper analyzes the parallel system error and experimental improvement. First, the experimental principle and error analysis