In an electrical arc, the direction of electron flow is from which of the following?

In an electrical arc, the flow of electrons originates from the cathode and moves towards the anode. This is due to the nature of electric charge; electrons, which carry a negative charge, are attracted to positive charges. The cathode is typically the electrode that emits electrons when sufficient energy is supplied, such as during an arc welding process. As electrons are emitted from the cathode, they travel through the ionized air or gas to the anode, establishing a conductive path that sustains the arc.

This understanding is crucial in welding procedures since it helps in setting up the equipment correctly and ensures that the welding parameters are optimal for creating a strong, quality weld. The knowledge of electron flow direction also aids in troubleshooting any inefficiencies in the welding process.