Part A A carbon resistor is to be used as a thermometer. On a winter day when the temperature is 4.00 °C, the resistance of the carbon resistor is 217.6 . What is the temperature on a spring day when the resistance is 215.4 ? Take the temperature coefficient of resistivity for carbon to be a = -5.00×10-4 C-1. ▸ View Available Hint(s) Ο ΑΣΦ Submit ? Part A At room temperature, what is the strength of the electric field in a 12-gauge copper wire (diameter 2.05 mm ) that is needed to cause a 3.50 A current to flow? Express your answer with the appropriate units. ◎ ° μα V m E=0.0178 Submit Previous Answers Request Answer ? × Incorrect; Try Again; 5 attempts remaining Part B What field would be needed if the wire were made of silver instead? Express your answer with the appropriate units. E = 1.69×10-2 -2 V m Submit Previous Answers Correct >
Part A A carbon resistor is to be used as a thermometer. On a winter day when the temperature is 4.00 °C, the resistance of the carbon resistor is 217.6 . What is the temperature on a spring day when the resistance is 215.4 ? Take the temperature coefficient of resistivity for carbon to be a = -5.00×10-4 C-1. ▸ View Available Hint(s) Ο ΑΣΦ Submit ? Part A At room temperature, what is the strength of the electric field in a 12-gauge copper wire (diameter 2.05 mm ) that is needed to cause a 3.50 A current to flow? Express your answer with the appropriate units. ◎ ° μα V m E=0.0178 Submit Previous Answers Request Answer ? × Incorrect; Try Again; 5 attempts remaining Part B What field would be needed if the wire were made of silver instead? Express your answer with the appropriate units. E = 1.69×10-2 -2 V m Submit Previous Answers Correct >
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter17: Current And Resistance
Section: Chapter Questions
Problem 66AP: When a straight wire is heated, its resistance changes according to the equation R = R0 [1 + (T ...
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