Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Current Electricity

Question:

A wire has a resistance of 2.1 Ω at 25°C and a resistance of 2.8 Ω at 100°C. The temperature coefficient of the resistance is:

Options:

$2.2×10^{-4} °C^{-1}$

$2.2×10^{-3} °C^{-1}$

$4.4×10^{-3} °C^{-1}$

$1.7×10^{-4} °C^{-1}$

Correct Answer:

$4.4×10^{-3} °C^{-1}$

Explanation:

The correct answer is Option (3) → $4.4×10^{-3} °C^{-1}$