The resistance of a nichrome coil is at

PHYSICS · Single correct · A Level · Physics · Electricity · Electricity

Problem

The resistance of a nichrome coil is 60 Ω60\,\Omega at 50 ∘C50\,^{\circ}\text{C}. If α\alpha for nichrome is 1.7×10−4 ∘C−11.7\times10^{-4}\,^{\circ}\text{C}^{-1}, what is its resistance at 0 ∘C0\,^{\circ}\text{C}? (a) 60.5 Ω60.5\,\Omega (b) 55.3 Ω55.3\,\Omega (c) 59.5 Ω59.5\,\Omega (d) 61.1 Ω61.1\,\Omega

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