The temperature coefficient of resistivity for copper is 0.0068 (C°)^-1. If a copper wire has a resistance of 104 Ω at 20°C, what is its resistance 80°C?

Question

Quizplus · Accepted Answer

The resistance at a new temperature can be calculated using the formula: R₂ = R₁[1 + α(T₂ - T₁)], where R₁ is the initial resistance, α is the temperature coefficient, and T₁ and T₂ are the initial and final temperatures. Substituting the given values: R₂ = 104[1 + 0.0068(80 - 20)] = 146 Ω.

The Temperature Coefficient of Resistivity for Copper Is 0