What are the main components of a welding circuit?

The main components of a welding circuit include the power source, electrodes, workpiece, and ground connection. The power source provides the necessary electrical current to produce the heat required for welding. The electrodes are the conductors that carry the electric current to the workpiece and may also supply filler material if they are consumable. The workpiece is the material being welded, which is the target for the welding process. Lastly, the ground connection is critical for completing the electrical circuit; it ensures a safe path for the current to return to the power source and helps reduce the risk of electric shock.

In contrast, the other options focus on aspects of welding that do not directly define the electrical circuit. For example, electrodes, filler metal, shielding gas, and torch pertain more to specific welding processes rather than the electrical circuit itself. Similarly, a power source, hose, nozzle, and regulator describe components typically associated with specific welding equipment like gas welding systems rather than the circuit as a whole. Lastly, the workpiece, drill, safety gear, and fixture deal with welding tasks and workplace safety but do not encompass the core elements of a welding circuit.