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当电压表串联在电路中会怎么样

更新时间: 2020-10-26 00:00:00     

当电压表串联在电路中时,因为电压表的电阻很大,可近似的看成断路,所以串联电压表后用电器不会工作。如果电路中没有其他用电器,串接的电压表显示的基本是电源电压;如果电路中有其他用电器,因为串联分压的原理, 电压表显示的只是它两端的压降,比电源电压要低。

关键词: 电压 串联 电路 怎么样

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