Chapter 20: Problem 5: Consider that a 0.105 mm diameter tungsten filament in a light bulb needs to have a resistance of 0.225 Ω at 20.0°C. a) How long should the filament be in m, assuming the resistivity of tungsten is 5.60 × 10^-8 Ω⋅m?

Chapter 20: Problem 5: Consider that a 0.105 mm diameter tungsten filament in a light bulb needs to have a resistance of 0.225 Ω at 20.0°C. a) How long should the filament be in m, assuming the resistivity of tungsten is 5.60 × 10^-8 Ω⋅m?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter18: Direct-Current Circuits

Section: Chapter Questions

Problem 50AP: Three 60.0-W, 120-V lightbulbs are connected across a 120-V power source, as shown in Figure P18.50....

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Question

Chapter 20: Problem 5: Consider that a 0.105 mm diameter tungsten filament in a light bulb needs to have a resistance of 0.225 Ω at 20.0°C.

a) How long should the filament be in m, assuming the resistivity of tungsten is 5.60 × 10^-8 Ω⋅m?

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