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多用电表是中学电学实验中常用的测量仪器,集电压表,电流表欧姆表于一身。由于其特殊性和整合性使得多用电表在师生中存在不少疑惑。笔者希望在这里和同仁们探讨交流。问题一:为何多用电表交流电压档0-2.5V刻度不均匀。多用电表交流电压档0-2.5V刻度不均匀,越靠近左侧刻度越密集不均匀而越往右侧刻度越稀趋于均匀。在使用时学生常会产生一些困惑:交流电压大于2.5伏的刻度线是均匀的。能不能用250伏量
Multimeter is commonly used in high school electrical experiments measuring instruments, voltmeter, ammeter Ohmmeter in one. Because of its particularity and integration makes multi-meter there are many doubts in teachers and students. I hope to discuss with my colleagues here. Question 1: Why multi-meter alternating voltage file 0-2.5V scale uneven. Multimeter AC voltage file 0-2.5V graduation uneven, closer to the left of the more intensive graduation and the more gradual toward the right side of the thinner tend to be uniform. Students often have some confusion when using them: tick marks with AC voltages greater than 2.5 volts are uniform. Can not use 250 volts