“描绘小灯泡的伏安特性曲线”实验是高中《物理》改版后增加的六个新实验之一。该实验是通过描绘小灯泡的伏安特性曲线,分析曲线变化的规律和原理。1 原理根据部分电路的欧姆定律 I=UR,当电阻阻值恒定时,通过电阻的电流 I 和电阻两端的电压 U 成正比,如果用坐标轴分别表示电流和电压,其图形是过原点的一 The “Volt-Ampere Curve Characterizing Small Bulbs” experiment is one of six new experiments added after the “Physics” high school revision. The experiment is to describe the law and principle of curve change by describing the volt-ampere characteristic curve of a small bulb. 1 Principle According to some of the circuit’s Ohm’s law I = UR, when the resistance is constant, the current through the resistor I and the voltage across the resistor U is proportional to, if the axis respectively, said the current and voltage, the graph is the origin of a