In a power cord, which area is considered the most vulnerable to damage?

The area where the cord meets the plug is considered the most vulnerable to damage because it experiences frequent stress and strain during normal use. This stress can lead to fraying or breaking of internal wires. Additionally, this juncture is often subject to bending and tugging, especially when plugging and unplugging the cord from a power source, which can further exacerbate wear and tear. Damage in this area can compromise the electrical connection and may lead to safety hazards such as short circuits or electrical shocks.

The middle section of the cord, while it can be damaged, typically has more distance from stress points compared to where the cord meets the plug. Similarly, the area near the device connection can also gather some wear, but it usually does not endure the same level of repeated mechanical stress as the plug connection. The outer insulation is important for protecting the internal components, but it doesn't specifically indicate a point of frequent mechanical failure like the junction at the plug does.