(a) Explanation Given Info: Resistance ( R ) of the wire at 11.5 ° C is 100.00 Ω . The temperature coefficient of resistance for Nichrome is 0.0004 ( ° C ) − 1 . Generally the resistivity of the material varies with temperature, and the resistance of the conductor also varies with temperature. The expression which tells the dependence of resistance on temperature is, R = R 0 [ 1 + α ( T − T 0 ) ] (I) R is the resistance of Nichrome wire at temperature T , R 0 is the resistance of Nichrome wire at temperature T 0 , α is the temperature coefficient of resistance of Nichrome. Here we consider temperature 0.0 ° C as T 0 and 11.5 ° C as T . Rearrange the equation (I). R 0 = R [ 1 + α ( T − T 0 ) ] Substitute 100.00 Ω for R , 0.0004 ( ° C ) − 1 for α , 0 (b) To determine The resistance ( R ) of the Carbon rod at 25.8 ° C .

University Physics with Modern Physics (14th Edition)

14th Edition

ISBN: 9780321973610

Author: Hugh D. Young, Roger A. Freedman

Publisher: PEARSON

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Temperature Variance of Resistance

Electrical resistance or simply resistance is the property of a material that opposes the free flow of electrons through it. The total amount of resistance to the flow of charges (or current) is affected by many factors like the length of the conducting …

Question

Chapter 25, Problem 25.23E

(a)

To determine

The resistance (R0) of the Nichrome wire at 0.0°C.

(b)

To determine

The resistance (R) of the Carbon rod at 25.8°C.

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Chapter 25, Problem 25.22E

Chapter 25, Problem 25.24E

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Chapter 25 Solutions

University Physics with Modern Physics (14th Edition)

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The resistance ( R 0 ) of the Nichrome wire at 0.0 ° C .

Solution Summary: The author explains the resistance of the Nichrome wire at 0.0°C and the temperature coefficient of resistance for the conductor.

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The resistance (R0) of the Nichrome wire at 0.0°C.

The resistance (R) of the Carbon rod at 25.8°C.

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Chapter 25 Solutions