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用伏安法测电池电动势和内阻的实验中,由于电压表和电流表内阻的实际存在,会导致路端电压和干路电流与表头的实际示数不相等,从而带来系统误差。分析这个实验系统误差的方法很多,常见的方法有公式法、参数对照法、等效电源法、图象法和图象对照法等。
Voltammetry with the battery emf and internal resistance test, due to the actual existence of the voltmeter and ammeter resistance, will lead to the road end voltage and trunk current and the actual number of the meter is not equal, resulting in systematic errors. There are many ways to analyze the experimental system error. Common methods are the formula method, the parametric comparison method, the equivalent power method, the image method and the image comparison method.