What do we call the resistance measured when no current flows?

The resistance measured when no current flows is referred to as open resistance. This term describes the situation where the circuit is open and, consequently, no electrons are moving, which means that the flow of current is absent. Under these conditions, the resistance can be measured using an ohmmeter or a similar device without any voltage applied or current flowing. It provides a snapshot of the resistive properties of the component or circuit under static conditions.

The term open resistance specifically indicates that the circuit is not complete, allowing for measurement in a state where there is no current. This is different from dynamic resistance, which relates to the resistance in the presence of a changing current, and static resistance, which is generally synonymous with open resistance in contexts where current flow is not present. Closed resistance is not a recognized term in this context, as it implies a complete circuit where current should be flowing.