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电流表和电压表是电学中两个重要的仪器,一些初学者对于它们的正确使用、读数,特别是它们之间的联系和区别更是难以把握,为了使同学们正确使用两表,掌握其方法,现将两表的联系与区别总结如下,供同学们学习参考.两相同:1.使用电流表时电流必须从电流表“+”接线柱流入,从“一”接线柱流出来;使用电压表时电流必须从电压表“+”接线柱流入,从“一”接线柱流出来.2.电流表使用时不能超过它的量程:电压表在使用时也不能超过其量程.
Ammeters and voltmeters are two important instruments in electricity. Some beginners have difficulty in understanding the correct use and reading of them, especially the connection and difference between them. In order to enable students to use the two tables correctly, master their methods. , Now the two tables of contact and differences are summarized as follows, for students to learn reference. Two are the same: 1. When using the ammeter, the current must flow from the current meter “+” terminal, from the “a” terminal out; When using a voltmeter, the current must flow from the voltmeter “+” terminal and flow out from the “1” terminal. 2. The ammeter cannot exceed its range when used: The voltmeter must not exceed its range when in use. .