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用一只电压表或一只电流表,以及一只已知电阻 R_0,要测量未知电阻 R_x 的数值,实验产生误差的原因当然与电压表并入电路时的分流作用和电流表串入电路时的降压作用有关,但是否仅与此有关呢?
Using a voltmeter or an ammeter and a known resistor R_0, the value of the unknown resistor R_x is measured. The reason for the experimental error is of course the shunt effect when the voltmeter is incorporated into the circuit and the drop when the ammeter is strung into the circuit. The pressure effect is relevant, but is it only relevant to this?