MDCAT Physics MCQ #465

A conductor has a temperature coefficient of resistance of 0.004/K. If its resistance at 20°C is 10 ohms, what is its resistance at 100°C?

MDCAT Physics MCQ #465

  1. Question 1

    Q1. A conductor has a temperature coefficient of resistance of 0.004/K. If its resistance at 20°C is 10 ohms, what is its resistance at 100°C?

    • A) 10.32 ohms
    • B) 12.8 ohms
    • C) 13.2 ohms
    • D) 14 ohms

    Answer: 13.2 ohms

    Explanation: R = R0(1 + αΔT) = 10(1 + 0.004*80) = 10(1 + 0.32) = 13.2 ohms.