Wiring and componentsQuestion 472 of 1506

What causes a fractured solder joint?

  1. Heating the joint for too long
  2. Using rosin-core solder
  3. Moving the joint while the solder is still plastic
  4. Using too little flux
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Correct answer: Moving the joint while the solder is still plastic

Parts must be held firmly while the solder cools.

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

Practice wiring and components

Questions last reviewed: 18 October 2026