A tungsten wire has a radius of 0.098 mm and is heated from 20.0 to 1333 oC. The temperature coefficient of resistivity is α = 4.5 × 10-3 (Co)-1. When 170 V is applied across the ends of the hot wire, a current of 1.9 A is produced. How long is the wire? Neglect any effects due to thermal expansion of the wire. I will rate. solve correctly.

A tungsten wire has a radius of 0.098 mm and is heated from 20.0 to 1333 oC. The temperature coefficient of resistivity is α = 4.5 × 10-3 (Co)-1. When 170 V is applied across the ends of the hot wire, a current of 1.9 A is produced. How long is the wire? Neglect any effects due to thermal expansion of the wire. I will rate. solve correctly.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter21: Current And Direct Current Circuits

Section: Chapter Questions

Problem 9P

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