engineering physics MCQ #1000

The resistance of a wire at 0°C is 10 ohm. If its temperature coefficient is 0.005/°C, at what temperature will its resistance be 15 ohm?

engineering physics MCQ #1000

  1. Question 1

    Q1. The resistance of a wire at 0°C is 10 ohm. If its temperature coefficient is 0.005/°C, at what temperature will its resistance be 15 ohm?

    • A) 100°C
    • B) 150°C
    • C) 200°C
    • D) 250°C

    Answer: 100°C

    Explanation: R = R0(1 + αT), so 15 = 10(1 + 0.005*T), hence T = 100°C.