题干

甲、乙、丙三位同学在做“用电流表测电流”的分组实验中,闭合开关前,他们的电流表指针均指在零刻度线处。当闭合开关试触时,发现电流表指针摆动分别出现了如图甲、乙、丙所示的三种情况。请分析他们在电流表的使用上分别存在什么问题,并写在下面的横线上。

甲同学的问题:____;乙同学的问题:____;

丙同学的问题:____

上一题 下一题 0.0难度 选择题 更新时间:2018-12-13 10:15:20

答案(点此获取答案解析)

电流表正负接线柱接反,电流表量程选大,电流表量程选小

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