In a parallel circuit, how is voltage characterized?

In a parallel circuit, voltage across all components is characterized as constant. This means that every component connected in a parallel arrangement experiences the same voltage drop as the source voltage. This uniform voltage is a defining characteristic of parallel circuits and distinguishes them from series circuits, where the voltage can vary across components based on their resistance.

In a parallel circuit, regardless of the resistance values of individual components, the input voltage remains the same across each branch connected to the power source. This property allows components to operate independently — if one component fails or is removed, the others still maintain the same voltage and can continue to function normally. This is why the correct response emphasizes the constancy of voltage in a parallel configuration.