Answered: A certain resistance was measured to be…

A certain resistance was measured to be 30 ohm at 20°C and 40 ohm at 70°C. Find the temperature coefficient (in per °C ) at 0°C. (Use 4 decimal places. Unit is not required.)

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter19: Special-purpose Outlets-water Pump, Water Heater

Section19.2: Water Heater Branch Circuit

Problem 4R: The heating elements in electric water heaters are generally classified into two categories. These...

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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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A certain resistance was measured to be 30 ohm at 20°C and 40 ohm at 70°C. Find the temperature coefficient (in per °C ) at 0°C. (Use 4 decimal places. Unit is not required.)

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