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多用电表有两种,一种是数字式多用电表,一种是指针式多用电表,其中指针式多用电表最为常见,经常被用来测量电压、电流、电阻、判断二极管的正负极,还可用来探究电容器.虽然新课标考纲不要求学生掌握多用电表检测电容器,但在某些高中物理实验技能大赛试题中,还会出现用多用电表检测电容器问题,笔者在此简单介绍用多用电表对电容器的探究.1判断电容器的正负极电解电容器两引线有正负极性之分,在电路中正极接
There are two kinds of multi-meter, one is a digital multimeter, one is a pointer multimeter, of which the most common pointer multimeter, often used to measure voltage, current, resistance, to determine the positive and negative diodes, but also useful To explore the capacitor.Although the new curriculum does not require students to master multi-purpose meter detection capacitors, but in some high school physics experiment skills contest questions, there will be multi-use ammeter to detect the capacitor problem, I briefly introduce the use of multi-meter on the capacitor Of the inquiry .1 to determine the positive and negative capacitors capacitor two leads have positive and negative polarity of the points in the circuit is positive