Answer the two following questions: A. Compute the resistivity of the given material whose resistance is 2Ω; area of cross section and length are 25cm2 and 15cm respectively. B. The length and area of a wire is given as 0.2m and 0.5m2 respectively. The resistance of that wire is 3Ω. Compute the resistivity.

Answer the two following questions: A. Compute the resistivity of the given material whose resistance is 2Ω; area of cross section and length are 25cm2 and 15cm respectively. B. The length and area of a wire is given as 0.2m and 0.5m2 respectively. The resistance of that wire is 3Ω. Compute the resistivity.

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter12: Electronic Control Devices

Section: Chapter Questions

Problem 14RQ

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Concept explainers

Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.

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Answer the two following questions:

A. Compute the resistivity of the given material whose resistance is 2Ω; area of cross section and length are 25cm² and 15cm respectively.

B. The length and area of a wire is given as 0.2m and 0.5m² respectively. The resistance of that wire is 3Ω. Compute the resistivity.

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