MDCAT Physics MCQ #592

A copper wire has a resistance of 1.7 Ω and a length of 10 m. What is the resistivity of the wire?

MDCAT Physics MCQ #592

  1. Question 1

    Q1. A copper wire has a resistance of 1.7 Ω and a length of 10 m. What is the resistivity of the wire?

    • A) 1.6 × 10^-6 Ωm
    • B) 1.7 × 10^-6 Ωm
    • C) 1.8 × 10^-6 Ωm
    • D) 2.0 × 10^-6 Ωm

    Answer: 1.7 × 10^-6 Ωm

    Explanation: The correct resistivity is calculated using the formula R = ρL/A. Given R and L, and knowing the cross-sectional area of a typical copper wire, we can find the correct resistivity. The other options are plausible but incorrect values.