Question

The temperature coefficient of a wire is 0.00125 K^-. Its resistance is 1ohm at 300 Kelvin. Its resistance will be 2 ohm at

Answer 1

Use this general equation: R = R₀[1 + αΔT]

R = R₀[1 + αΔT]
2 = 1 × [1 + 0.00125 × (T - 300)]
1/0.00125 = T - 300
T = 300 + 1/0.00125
T = 300 + 800
T = 1100 K

∴ Resistance is 2 Ω at 1100 Kelvin

Answer 2

Answer:

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