Red Seal Electrician Practice
DC circuitsQuestion 534 of 1506

What happens to the conductivity of most metals when they are heated?

  1. They become poorer conductors
  2. They become better conductors
  3. They become insulators at once
  4. There is no change
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Correct answer: They become poorer conductors

Most metals conduct better when cooled.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 1.2: Conductors, Insulators, and Electron Flow

Practice dc circuits

Questions last reviewed: 18 October 2026