摘要:题 小明想利用实验室提供的器材测量未知电阻R,的阻值(阻值约为1kΩ).实验室所提供的器材有:电源(电压约为9V),滑动变阻器(100Ω,2A),电流表(量程为0~0.6A,分度值为0.02A),
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