1.首先要用半偏法测定电流表的内阻如果采用图1所示的电路测定电流表a的内电阻并且要想得到较高的精确度那么从以上给出的器材中可变电阻 Template




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tomski1.首先要用半偏法测定电流表的内阻如果采用图1所示的电路测定电流表a的内电阻并且要想得到较高的精确度那么从以上给出的器材中可变电阻 coloring