A nichrome wire of length 1 m and cross-sectional area has resistance 22 Ω

PHYSICS · Single correct · CBSE · Physics · Electricity · Electricity

Problem

A nichrome wire of length 1 m and cross-sectional area 0.50 mm20.50\,\text{mm}^2 has resistance 22 Ω. What is the resistance of another nichrome wire of length 2 m and cross-sectional area 0.25 mm20.25\,\text{mm}^2 kept at the same temperature? (a) 44  Ω44\;\Omega (b) 88  Ω88\;\Omega (c) 22  Ω22\;\Omega (d) 176  Ω176\;\Omega

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