一、电荷带电体具有吸引轻小物体的性质.人们通过大量的实验研究发现,自然界中只有两种电荷:与绸子摩擦过的玻璃棒上带的电荷叫正电荷;与毛皮摩擦过的橡胶棒上带的电荷叫负电荷.同种电荷互相排斥,异种电荷互相吸引.电荷的多少叫做电荷量,简称电荷,单位是库仑,符号是C. First, the charge of a charged body has the property of attracting light and small objects. A lot of experimental studies have found that there are only two types of charges in nature: the charge on a glass rod that has been rubbed with silk is called a positive charge; rubber rods that have been rubbed with fur The charge on the belt is called negative charge. The same kind of charge repels each other and the different kinds of charges attract each other. The amount of charge is called the amount of charge, or charge for short, the unit is Coulomb, and the symbol is C.