In a parallel circuit, the voltage drop across each branch is equal to the applied voltage. What is this relationship called?

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In a parallel circuit, all branches are connected across the same two points, so they share the same potential difference. The voltage from the source appears across every branch, meaning the voltage drop in each branch equals the applied voltage. This is why the voltage is the same (constant) across all parallel paths. While the currents in different branches may vary depending on each branch’s resistance, the voltage remains the same everywhere in parallel. The other options would imply a difference in voltage among branches or a dependence on the branch, which doesn’t happen in an ideal parallel setup.