Red Seal Electrician Practice
Wiring and componentsQuestion 794 of 1506

A long run of normal conductor carries current. What is true about the voltage along the conductor?

  1. The voltage drop is always more than 10 V
  2. The voltage rises along the run
  3. There is a voltage drop, even though it is usually small
  4. There is no voltage drop, because conductors have no resistance
Show answer

Correct answer: There is a voltage drop, even though it is usually small

Almost all conductors have some resistance, so current causes some drop.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 12.1: 12.1 Introduction to Conductance and Conductors

Practice wiring and components

Questions last reviewed: 18 October 2026