A voltmeter connected across the terminals of a tungsten-filament light bulb measures 112 V when an ammeter in line with the bulbregisters 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 0· m) at the bulb's operating temperature if the filament has an uncoiled length of 0.613 m anda radius of 2.28 x 10-5 m.Ω. m

Here we have to use some basic formula.

Answered: A voltmeter connected across the…

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.

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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Concept explainers

Temperature Variance of Resistance

Electrical resistance or simply resistance is the property of a material that opposes the free flow of electrons through it. The total amount of resistance to the flow of charges (or current) is affected by many factors like the length of the conducting material, its cross-sectional area, resistivity, and temperature.

Question

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 0· m) at the bulb's operating temperature if the filament has an uncoiled length of 0.613 m and
a radius of 2.28 x 10-5 m.
Ω. m

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