The temperature coefficient of resistivities of three different materials are listed. The said materials have the same length, cross-sectional area, and resistivity at 20.0 °C. They are heated from 20.0 °C to 40.0 °C. Which of the choices is the correct descending order of change in resistance of the material?
The temperature coefficient of resistivities of three different materials are listed. The said materials have the same length, cross-sectional area, and resistivity at 20.0 °C. They are heated from 20.0 °C to 40.0 °C. Which of the choices is the correct descending order of change in resistance of the material?
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Transcribed Image Text:Question 25
The temperature coefficient of resistivities of three different materials are listed. The said
materials have the same length, cross-sectional area, and resistivity at 20.0 °C. They are heated
from 20.0 °C to 40.0 °C. Which of the choices is the correct descending order of change in
resistance of the material?
1. Material I with a = 0.0004 (-C)-¹
II. Material II with a = 0.0043 (°C)-¹
III. Material III with a = 0.0039 (°C)-¹
O II, III, I
I, II, III
O I, III, II
O III, II, I
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