engineering physics MCQ #992

A wire has a resistance of 5 ohm at 20°C. If the temperature coefficient is 0.01/°C, what is its resistance at 100°C?

engineering physics MCQ #992

  1. Question 1

    Q1. A wire has a resistance of 5 ohm at 20°C. If the temperature coefficient is 0.01/°C, what is its resistance at 100°C?

    • A) 9 ohm
    • B) 7 ohm
    • C) 5 ohm
    • D) 3 ohm

    Answer: 9 ohm

    Explanation: R = R0(1 + αΔT), so R = 5(1 + 0.01 * 80) = 9 ohm.