What is an open circuit characterized by?

An open circuit is characterized primarily by the condition of having no current flowing through it. This occurs when the circuit is incomplete due to a break in the connection, which prevents electric charge from moving along the intended path. In an open circuit, while there may still be voltage present across the ends of the circuit components, the lack of a complete path means that there is no flow of current, which is essential for any electrical operation to take place.

In this situation, it's important to note that while there may be voltage, that doesn’t result in current unless the circuit is closed. This differentiates an open circuit distinctly from a closed circuit, where current flows freely. The terms related to voltage supply, resistance, and energy storage do not capture the fundamental defining characteristic of an open circuit as clearly as the flow of current does. Hence, the absence of current is the definitive aspect that characterizes an open circuit.