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在用伏安法测电源的电动势和内电阻的实验中,由于电压表和电流表内阻的影响,总是不能同时测出电源的路端电压和内电流,使得测量结果总存在着系统误差.如图1所示,当采用图1(a)所示的电路时,实际测出的
In voltammetry with the electromotive force and internal resistance of the power supply experiment, due to the voltmeter and ammeter resistance, always can not simultaneously measure the power supply terminal voltage and internal current, making the measurement results there is always a systematic error. Shown in Figure 1, when using the circuit shown in Figure 1 (a), the actual measured