Red Seal Electrician Practice
Wiring and componentsQuestion 807 of 1506

Two copper conductors have the same length. One has a larger cross-sectional area. Which one passes current more easily?

  1. Both equally
  2. The smaller conductor
  3. The larger conductor
  4. Neither, because copper has high resistance
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Correct answer: The larger conductor

A larger area gives the electrons more room to move.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 12.2: Conductor Size

Practice wiring and components

Questions last reviewed: 18 October 2026