一、填空题1 相互摩擦过的物体具有了的性质 ,我们就说它们带了电荷 .用所带的电荷叫正电荷 .电子是带有最小的粒子 ,人们把它称作元电荷 .2 验电器的作用是 ,其工作原理是 .验电器带正电荷 ,跟一个带电球Ａ接触后两金箔张角变大 ,则Ａ球带 ,且带电量比验电器的要 .3 能够的装 First, fill in the blanks 1 The nature of objects that have rubbed each other has something to do with it. We say that they have a charge. The charge that is used is called a positive charge. The electrons have the smallest particles. People call it the yuan charge. The role of the electrical apparatus is that its working principle is that the electroscope has a positive charge. After the contact with a charged ball A, the angle of the two gold foils becomes larger, then the A ball belt is used, and the charge amount is higher than that of the electroscope.3.