5. A wire has the same resistance as the one given in the figure. Calculate its resistivity if the length of the wire is 10m and its area of cross section is 2m. 5A 200V a) 16 ohm-metre b) 8 ohm-metre c) 16 kiloohm-metre d) 8 kiloohm-metre

5. A wire has the same resistance as the one given in the figure. Calculate its resistivity if the length of the wire is 10m and its area of cross section is 2m. 5A 200V a) 16 ohm-metre b) 8 ohm-metre c) 16 kiloohm-metre d) 8 kiloohm-metre

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

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter13: Heating Control Devices

Section: Chapter Questions

Problem 28RQ

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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.

Question

5. A wire has the same resistance as the one
given in the figure. Calculate its resistivity if the
length of the wire is 10m and its area of cross
section is 2m.
5A
200V
a) 16 ohm-metre
b) 8 ohm-metre
c) 16 kiloohm-metre
d) 8 kiloohm-metre

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