A silver wire has a resistance of 2

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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:

$\alpha$ = $\frac{R-R_{o}}{\theta R_{o}}$