everyday science MCQ #1045

Copper wires are generally used for electrical power transmission instead of iron wires because:

everyday science MCQ #1045

  1. Question 1

    Q1. Copper wires are generally used for electrical power transmission instead of iron wires because:

    • A) Copper is a better conductor than iron
    • B) Copper is cheaper than iron
    • C) Copper can take higher power than iron
    • D) Copper is lighter than iron

    Answer: Copper is a better conductor than iron

    Explanation: Copper has much lower electrical resistivity (~1.68 × 10⁻⁸ Ω·m) than iron (~1.0 × 10⁻⁷ Ω·m), making it a significantly better electrical conductor and reducing energy losses.