基于串并联电阻法的半偏思想测量电表内阻

Ammeter Internal Resistance Measurement of Thinking of Half Deviation Based on Series-parallel Resistance Method

利用中学物理实验中半偏法测量电表内阻的思想,通过给电表并联和串联电阻,调节串并联电阻的阻值使电表指针达到满偏和半偏的方法测量电表内阻,拓展了测量电表内阻的方法。

Using the thinking of half deviation in the physics experiment of middle school, the ammeter internal resistance is measured. Through parallel and series resistor to the ammeter,the series and par- allel resistance is regulated to make the ammeter pointer achieve full partial and semi-partial, then the ammeter internal resistance can be measured, which expands the method of measuring the ammeter in- ternal resistance.