In this method, a constant voltage source (v) is placed in series with the unknown resistor (r) and an ammeter (IM).

在此方法中，恒压源(V)与未知电阻(R)和安培计(IM)相串联。

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In this method, a constant voltage source (v) is placed in series with the unknown resistor (r) and an ammeter (IM).

在此方法中，恒压源(V)与未知电阻(R)和安培计(IM)相串联。

youdao