What is one characteristic of the arc stability provided by inherent rectification?

The characteristic of the arc stability provided by inherent rectification that is being highlighted is related to the behavior of the welding current during the DCEN (Direct Current Electrode Negative) phase. Inherent rectification enhances the stability of the welding arc primarily by improving the efficiency of the current flow, allowing it to be more stable during operation.

When using DCEN polarity, the electrode experiences a higher current density due to the positive ions being attracted to the negative electrode. This results in a more focused and stable arc, which helps to maintain consistent heat input and reduces the likelihood of arc outages. The stability afforded by this configuration contributes to better weld quality and penetration.

In particular, the option emphasizes that higher welding current during DCEN aids in achieving more effective arc stability, making it a critical aspect of the welding process in direct current applications. Other characteristics like simplifying the welding setup or electrode life are influenced by various factors in the welding process but do not directly relate to the inherent rectification's impact on arc stability in the context given.