What term describes a circuit that has the same voltage across all its elements?

A circuit that has the same voltage across all its elements is referred to as a parallel circuit. In a parallel configuration, each component is connected across the same two nodes, which ensures that the voltage across each element is identical. This characteristic is fundamental to parallel circuits, making them widely used in various applications, such as household wiring, where devices can operate independently of each other while still receiving the same voltage from a shared source.

In contrast, a series circuit is characterized by components connected in a single path, where the voltage is divided among the components, and thus, each component does not receive the same voltage. An open circuit signifies that there is a break in the path, meaning no current flows and is not a valid description of any consistent voltage across elements. A nodal circuit typically refers to the graphical representation of connections (nodes) and is not a standard term used to classify the voltage behavior across elements.