Scholarlink

<p>In an electric circuit with an incandescent light bulb and a resistor connected in series, the actual voltage across the bulb and the current through the circuit are often determined graphically by the intersection, the operating point of the <i>I</i> − <i>V</i> curves of the bulb and the resistor. This article presents an analytic form of the operating point by simplifying the function of the <i>I</i> − <i>V</i> curve for a light bulb in two cases: <i>T</i>/<i>T</i><sub>0</sub> = <i>O</i>(1) and <i>T</i>/<i>T</i><sub>0</sub> = <i>O</i>(10), where <i>T</i><sub>0</sub> is room temperature and <i>T</i> is the temperature of the tungsten filament. We show that these approximation formulae give the operating point with sufficient accuracy. It will be suitable for undergraduate students to understand electric circuits with a nonlinear resistor.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Operating Point of an Electric Circuit With an Incandescent Light Bulb and a Resistor

  • 期刊论文

  • 发表日期：

    2025年6月1日

查看全文
  • Yuji Kajiyama

摘要

In an electric circuit with an incandescent light bulb and a resistor connected in series, the actual voltage across the bulb and the current through the circuit are often determined graphically by the intersection, the operating point of the I − V curves of the bulb and the resistor. This article presents an analytic form of the operating point by simplifying the function of the I − V curve for a light bulb in two cases: T/T0 = O(1) and T/T0 = O(10), where T0 is room temperature and T is the temperature of the tungsten filament. We show that these approximation formulae give the operating point with sufficient accuracy. It will be suitable for undergraduate students to understand electric circuits with a nonlinear resistor.