Dissipated power (loss); read pressures and flows on the attached bonds to obtain the pressure drop.
Scope
No inertia or stored volume. The bench uses it as the explicit accumulator-branch resistance.
Classic bond graph
Implemented internal graph: 1 + R. The junction enforces common through-flow and p₁ − p₂ − e_R = 0; R supplies e_R = RQ. Thus Q₁ = Q and Q₂ = −Q with flows positive into the block. A 0-junction would impose equal pressures and cannot replace this series 1-junction. Half-arrows set positive power references; dashed pink arrows carry signals only. Causal strokes are omitted because they depend on the connected model.