A voltmeter connected across the terminals of a tungsten-filament light bulb measures 112 V when an ammeter in line with the bulb registers a current of 0.670 A. HINT (a) Find the resistance of the light bulb. (Enter your answer in ohms.) (b) Find the resistivity of tungsten (in Q - m) at the bulb's operating temperature if the filament has an uncoiled length of 0.573 m and a radius of 2.28 x 10-5 m.
A voltmeter connected across the terminals of a tungsten-filament light bulb measures 112 V when an ammeter in line with the bulb registers a current of 0.670 A. HINT (a) Find the resistance of the light bulb. (Enter your answer in ohms.) (b) Find the resistivity of tungsten (in Q - m) at the bulb's operating temperature if the filament has an uncoiled length of 0.573 m and a radius of 2.28 x 10-5 m.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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![A voltmeter connected across the terminals of a tungsten-filament light bulb measures 112 V when an ammeter in line with the bulb
registers a current of 0.670 A.
HINT
(a) Find the resistance of the light bulb. (Enter your answer in ohms.)
(b) Find the resistivity of tungsten (in Q · m) at the bulb's operating temperature if the filament has an uncoiled length of 0.573 m and
a radius of 2.28 × 10-5 m.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff5be4881-4b7f-4a47-a17e-0f4e5eee5efd%2F25692810-d576-4a53-8ab8-8c55e594ca4a%2Frrgyjr8_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A voltmeter connected across the terminals of a tungsten-filament light bulb measures 112 V when an ammeter in line with the bulb
registers a current of 0.670 A.
HINT
(a) Find the resistance of the light bulb. (Enter your answer in ohms.)
(b) Find the resistivity of tungsten (in Q · m) at the bulb's operating temperature if the filament has an uncoiled length of 0.573 m and
a radius of 2.28 × 10-5 m.
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