A piece of copper wire has resistance 10 Ω at 0°C. α = 0.004/°C. At 100°C resistance is MCQ with Answer and Explanation

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A piece of copper wire has resistance 10 Ω at 0°C. α = 0.004/°C. At 100°C resistance is

A. 14 Ω

B. 12 Ω

C. 8 Ω

D. 10 Ω

Answer: Option A

Solution (By JKSSB Mock Tests)

R_t = R₀(1+α t) = 10(1+0.004×100) = 10(1.4) = 14 Ω.

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Correct Answer: Option A

Explanation:
Distance light travels in one year ≈ 9.46×10¹² km.

This question belongs to: Science Physics

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