A tungsten wire is 28m long and is used in a toaster at 120V. The resistivity of this material is 5.6*10^-8 ohm*m. The radius of the wire is 2.5*10^-4 m. a) What is the resistance of the wire? b) How much energy is delivered to the tungsten wire in 30s?

A tungsten wire is 28m long and is used in a toaster at 120V. The resistivity of this material is 5.610^-8 ohmm. The radius of the wire is 2.5*10^-4 m. a) What is the resistance of the wire? b) How much energy is delivered to the tungsten wire in 30s?

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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Question

A tungsten wire is 28m long and is used in a
toaster at 120V. The resistivity of this
material is 5.6*10^-8 ohm*m. The radius of
the wire is 2.5*10^-4 m.
a) What is the resistance of the wire?
b) How much energy is delivered to the
tungsten wire in 30s?

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