Red Seal Electrician Practice
DC circuitsQuestion 415 of 1506

One lamp in a parallel lighting circuit burns out. What happens to the other lamps?

  1. They all go out, because the current path is broken
  2. They get dimmer, because the voltage drops
  3. They get brighter, because the voltage rises
  4. They stay on; each branch has its own path
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Correct answer: They stay on; each branch has its own path

Opening one branch does not break the other branches.

Source: Electrical Fundamentals Competency (Industry Training Authority of BC), 7.2: Parallel Circuits

Practice dc circuits

Questions last reviewed: 18 October 2026