Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Current Electricity

Question:

A silver wire has a resistance of 2.1Ω  at 27.5°C, and a resistance of 2.7Ω  at 100°C. Determine the temperature coefficient of resistivity of silver. 

Options:

0.0039°C−1 

0.0029°C−1 

0.0018°C−1 

0.0006°C−1

Correct Answer:

0.0039°C−1 

Explanation:

\(\alpha \) = \(\frac{R-R_{o}}{\theta R_{o}}\)