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我们所学习的电路各色各样,千变万化,其中有一个典型的电路,通过这个电路及其变化,我们能够串联起初中电学电路中常见的知识点和考点。下面对这个典型电路作以下剖析。一、典型电路原型剖析电路如图1所示,不难看出,其本质是一个灯泡和一个滑动变阻器串联。我们可以这样分析:该电路研究对象是一个灯泡(或定值电阻),灯泡可以作为所有用电器的代表,为了随时监测它,我们设置了电流表和电压表,目的就是随时测出它两端的电压和通过它的电流。为了进一步方便控制
The circuits we studied were varied and varied. There was a typical circuit, through which we could concatenate the common knowledge points and test centers in the electrical circuit of the beginning. The following analysis of this typical circuit. First, a typical circuit prototype circuit shown in Figure 1, it is easy to see that its essence is a light bulb and a sliding rheostat in series. We can analyze this: The circuit is a light bulb (or set resistance), the bulb can be used as a representative of all appliances, in order to monitor it at any time, we set the ammeter and voltmeter, the purpose is to measure the voltage across it And through it’s current. In order to further facilitate control