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an easy physics question!

来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/15 14:45:40
an easy physics question!
Why must ammeters be connected in line (in series) with a device,but viltmeters have to be connected across it (in parallel)?
因为电流表电阻很小,并联使用等于构成短路.而电压表电阻很大,串联使用会形成断路.
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