WebFeb 25, 2024 · So at this point, we could say, the voltage is six volts and the current over here is three amps. This is three amps. And so if you divide the two, the voltage divided by the current, we get the … WebThis is because: As the current increases, the temperature of the filament in the lamp increases. Since the filament is a metal, the higher temperature causes an increase in resistance. Resistance opposes the current, causing the current to increase at a slower rate. Where the graph is a straight line, the resistance is constant.
9.2.4 Resistance in a Filament Lamp - Save My Exams
WebDec 30, 2024 · That's because the "resistance" of a light bulb does not directly depend on the voltage: It depends on the temperature of the filament, and the temperature depends on both the voltage and time. After a practically instantaneous change in Voltage, the temperature will follow more slowly. – Solomon Slow Dec 30, 2024 at 17:47 Add a … WebJan 25, 2024 · This video explains the results for the IV characteristics of a filament bulb (or filament lamp) experiment, including plotting the IV characteristics (relationship between … extremity\\u0027s aa
Electric potential difference and Ohm
Webbulb filament at each setting of the power supple. The formula for resistance is R = V/I. Plot a graph with current on the horizontal axis and resistance on the vertical axis. Mark an X on the graph where the bulb first begins to glow faint red. (Use value from 7 above.) WebOct 22, 2024 · If the current through them remains constant: The light bulb does not have a linear relationship. The resistance of the bulb increases as the temperature of the bulb increases. Why is the IV graph for a filament lamp not a straight line? Components which show I-V graphs that are not straight lines are non-linear circuit elements. WebJul 25, 2013 · Abstract and Figures We measured the voltage-current (v-i) characteristic of three incandescent lightbulbs and found power-law functions that describe the v-i characteristic. : Lightbulb No. 1.... docusign is free