Which of the following best describes a constant voltage (CV) arc welding circuit?

Which of the following best describes a

Multiple choice — select the best answer

AThe power source maintains voltage at a set point while current self-adjusts
BBoth voltage and current remain fixed during welding
CThe power source maintains current at a set point while voltage self-adjusts
DThe circuit automatically increases voltage as arc length increases

✓ Correct answer: A. The power source maintains voltage at a set point while current self-adjusts In constant voltage circuits, the power source maintains relatively stable voltage while allowing current to vary based on the physical distance between the electrode and workpiece. This self-regulation makes them ideal for GMAW (MIG) welding.

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