What is the function of a cord grip?

The function of a cord grip is to secure the cable in a plug. This is essential for ensuring that the electrical connection is stable and prevents any movement that could lead to disconnection or arcing within the plug, which could pose safety risks such as electrical shock or fire. By firmly holding the cable in place, the cord grip also helps to relieve any strain on the connections, further enhancing safety and durability.

The other functions listed do not align with the purpose of a cord grip. Increasing electrical resistance is not a function of cable components; it is typically seen in resistive materials or components intended for that purpose. Dissipating heat is usually related to components like heat sinks or thermal management systems, not cord grips. Similarly, measuring electrical currents is a task for devices like ammeters or current sensors, not for a component meant to secure cables. Thus, the primary role of a cord grip is indeed to maintain the integrity of the electrical connection by securely fastening the cable within the plug.