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§2-1 电阻圈象与伏安特性曲线的关系线性电阻元件的伏安特性曲线在伏安坐标平面上是一条过坐标原点的直线,特性曲线上的点与坐标原点之间的线段是电阻图象矩形的对角线。当流经电阻元件的电流值变化时,电阻矩形图象的一个顶点在伏安特性曲线上的位置相应改变。因此,电流值各异而电阻值相同的同值电阻元件,它们的图象是一系列相似的矩形(见
§2-1 relationship between the resistive ring and the volt-ampere characteristic curve The volt-ampere characteristic curve of the linear resistive element is a straight line passing the origin of the coordinate on the volt-ampere coordinate plane. The line between the point on the characteristic curve and the origin of the coordinate is the resistance The diagonal of the image rectangle. When the value of the current flowing through the resistive element changes, the position of a vertex of the resistive rectangular image on the volt-ampere characteristic curve changes accordingly. Therefore, the same value of the current value of the same resistance value of the same resistance element, their image is a series of similar rectangles (see