When current reaches a junction in a parallel circuit, how does it move?

When current reaches a junction in a parallel circuit, how does it move?

• A. It stops
• B. It flows only through the path of least resistance
• C. It splits between the branches
• D. It flows back toward the source

Answer: (C)

At a junction in a parallel circuit, the same voltage is across every branch, so the current that arrives at the junction is shared among the available paths. Each branch draws current according to I = V/R, meaning branches with lower resistance take more current, but all conductive branches receive some current. The total current entering the junction equals the sum of the currents in all branches (Kirchhoff’s current law). Therefore, the current splits between the branches. It doesn’t stop moving, nor does it flow exclusively through the path of least resistance; if a branch has higher resistance, it carries less current, and if a branch is open, it carries none. The current that enters the junction is redistributed among the branches and still returns to complete the circuit.

At a junction in a parallel circuit, the same voltage is across every branch, so the current that arrives at the junction is shared among the available paths. Each branch draws current according to I = V/R, meaning branches with lower resistance take more current, but all conductive branches receive some current. The total current entering the junction equals the sum of the currents in all branches (Kirchhoff’s current law). Therefore, the current splits between the branches.

It doesn’t stop moving, nor does it flow exclusively through the path of least resistance; if a branch has higher resistance, it carries less current, and if a branch is open, it carries none. The current that enters the junction is redistributed among the branches and still returns to complete the circuit.