Hamilton Sullivan
07/02/2023 · Junior High School
Un temometro de platino tiene una resistencia de 7 ohm a \( 140^{\circ} \mathrm{C} \). Calcular Resistoncia \( 300^{\circ} \mathrm{C} \) a alpha \( 3.9 \times 10^{-3}{ }^{\circ} \mathrm{C}^{-1} \)
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Para calcular la resistencia a \( 300^{\circ} \mathrm{C} \), se usa la fórmula \( R = R_0 \left( 1 + \alpha \cdot \Delta T \right) \). Con \( R_0 = 7 \) ohmios a \( 140^{\circ} \mathrm{C} \) y \( \alpha = 3.9 \times 10^{-3}{ }^{\circ} \mathrm{C}^{-1} \), la resistencia es aproximadamente 11.368 ohmios.
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