Wiring and componentsQuestion 470 of 1506

What is the major sign of a cold solder joint?

  1. A bright, shiny, smooth surface
  2. Burned insulation next to the joint
  3. A hole in the middle of the joint
  4. A frosty look on the surface of the solder
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Correct answer: A frosty look on the surface of the solder

A cold joint did not wet well.

Source: Electrical Fundamentals Competency (Industry Training Authority of BC), 10.3: Soldering techniques

Practice wiring and components

Questions last reviewed: 18 October 2026