College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Resistivity
Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends o…
Question
The filament of a certain light bulb is made of tungsten and has a length of 0.48 m and a circular cross-section with a diameter of 0.062 mm. a. Calculate the resistance of the filament at room temperature. b. A4.0 V voltage applied to the filament results in a 0.078 A current. Determine the temperature of the filament under these conditions. I need to show all work please
2. The filament of a certain light bulb is made of tungsten and has a length of 0.48 m and a circular cross-section with a diameter of 0.062 mm. a. Calculate the resistance of the filament at room temperature. b. A4.0 V voltage applied to the filament results in a 0.078 A current. Determine the temperature of the filament under these conditions.
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Transcribed Image Text:2. The filament of a certain light bulb is made of tungsten and has a length of 0.48 m and a circular cross-section with a diameter of 0.062 mm. a. Calculate the resistance of the filament at room temperature. b. A4.0 V voltage applied to the filament results in a 0.078 A current. Determine the temperature of the filament under these conditions.
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Step 2: Cross-sectional area
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Step 3: Resistance at room temperature
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Step 4: Ohm's law
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Step 5: Resistance at a temperature under some conditions
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