用如图甲所示的电路测量一节蓄电池的电动势和内电阻.蓄电池的电动势约为2v内电阻很小.除蓄电池开关导线外可供使用的实验器材还有a.电压表 Template




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tomski用如图甲所示的电路测量一节蓄电池的电动势和内电阻.蓄电池的电动势约为2v内电阻很小.除蓄电池开关导线外可供使用的实验器材还有a.电压表 coloring