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实际测量中使用的大量程电流表是由小量程电流表改装而成的.图中G是满偏电流(即小量程电流表允许通过的最大电流)Ig=1mA的电流表,其电阻Rg=100Ω,a、b是改装后的两个接线柱时. (1)当通过...
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下列关于钳形电流表使用注意事项的说法正确的有
合理选择钳形电流表量程在不确定量程的情况下, 先选择大量程,后选择小量程, 或看铭牌值进行估算如实际测量电流数据大于钳形电流表量程, 则会对钳形电流表造成损坏
当使用最小量程测量时, 如果钳形电流表量程较大, 可将被测导线绕几匝, 匝数要以钳口中央的匝数为准, 则实际量值=读数/匝数
测量时应并联在电路中, 如果测量的量程过大, 应换表
使用钳形电流表时, 尽量远离强磁场
测量时, 应使被测导线处在钳口的中央, 并使钳口闭合紧密
某电流表有两个量程只知道大量程是0-9A小量程刻度值未标明小明为了探究电流表的小量程是多少他先用大量
常用的电压表是由小量程的电流表G.改装而成的电流表G.也是一个电阻同样遵从欧姆定律图甲是一个量程为0
实际测量中所使用的电流表是由小量程电流表改装而成的.图a中G是满偏电流即小量程电流表允许通过的最大电
实际测量中使用的大量程电流表是由小量程电流表改装而成的.图中G是满偏电流即小量程电流表允许通过的最大
电学实验中使用的电流表和电压表都是由小量程电流表○表头改装而成的从电路的角度看表头就是一个电阻同样遵
电学实验中使用的电流表和电压表都是由小量程电流表○表头改装而成的从电路的角度看表头就是一个电阻同样遵
实际测量中使用的大量程电流表是由小量程电流表改装而成的图中G.是满偏电流〔即小量程电流表允许通过的最
电学实验中使用的电流表和电压表都是由小量程电流表G.表头改装而成的从电路的角度看表头就是一个电阻同样
实际测量中使用的大量程电流表是由小量程电流表改装而成的图中G.是满偏电流〔即小量程电流表允许通过的最
实验室使用的电压表是由小量程的电流表G改装而成的图乙是小量程电流表G改装成电压表的原理图当将﹣和3接
实验室的电压表是由小量程电流表改装而成的图中G.是满偏电流即电流表允许通过的最大电流I.g=10mA
常用的电压表是由小量程的电流表G.改装而成的电流表G.也是一个电阻同样遵从欧姆定律图甲是一个量程为0
钳形电流表使用注意事项中错误的是
在不确定量程的情况下, 先选择大量程, 后选择小量程, 或看铭牌值进行估算
当使用最小量程测量时, 如果钳形电流表量程较大, 可将被测导线绕几匝, 匝数要以钳口中央的匝数为准, 则实际量值=读数×匝数
使用钳形电流表时, 尽量远离强磁场
测量时, 应使被测导线处在钳口的中央, 并使钳口闭合紧密
实际测量中所使用的电流表是由小量程的电流表改装而成的图a中G.是满偏电流即小量程电流表允许通过的最大
钳形电流表使用时需要注意
在不确定量程的情况下,先选择大量程,后选择小量程或看铭牌值进行估算
在不确定量程的情况下,先选择小量程,后选择大量程或看铭牌值进行估算
当使用最小量程测量时,如果钳形电流表量程较大,可将被测导线绕几匝
使用钳形电流表时,尽量远离强磁场
使用钳形电流表时,不用远离强磁场
实际测量中使用的大量程电流表是由小量程电流表改装而成图为某同学改装后的电流表内部电路图G是灵敏电流
某物理兴趣小组的同学在查阅资料时了解到实际的电流表虽然阻值很小但并不为零通过请教老师他们进一步了解到
实际测量中所使用的电流表是由小量程电流表改装而成的.图a中G.是满偏电流即小量程电流表允许通过的最大
钳型电流表使用时应先用
较大量程
较小量程
最小量程
空量程
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