Carbon has a negative temperature coefficient of resistance of -0.5 *10^-3 (°C) ^- ¹. What temperature increase would result in a resistance decrease of 3% for a carbon resistor? A) 60°C B) 100°C C) 20°C D) 40°C

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Quizplus · Accepted Answer

The resistance change percentage is given by the formula: ΔR/R = α * ΔT. Here, ΔR/R = -0.03 (for a 3% decrease), and α = -0.5 x 10^-3. Solving for ΔT gives ΔT = 60°C.

Carbon Has a Negative Temperature Coefficient of Resistance of -0