论文部分内容阅读
考点概述1.导体对电流的阻碍作用叫电阻.电阻是导体本身的一种性质,不同导体的电阻一般是不一样的,它的大小决定于导体的材料、长度和横截面积,对于同一种材料做成的导体,长
Overview of the test center 1. The role of the conductor on the current resistance is called resistance. Resistance is a property of the conductor itself, the resistance of different conductors is generally not the same, its size depends on the conductor material, length and cross-sectional area for the same Material made of conductor, long