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电流表和电压表是初中电学中常用的电表,是初学电学知识者必会的测量工具,当电路中的某部分电阻发生变化时,判断电流表、电压表的示数如何变化,是必须掌握的一项能力。结合案例对电表示数变化技巧进行分析。
Ammeter and voltmeter is commonly used in junior high school meter is a must for beginners electrical knowledge of the measuring tools, when the circuit resistance changes in some parts, to determine ammeter, voltmeter how the number changes, it is necessary to master a Item ability. Combined with case analysis of the number of changes in the number of skills.