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PARALLEL CIRCUIT Name _______________________________ Per __________ Date _________________ • The voltages across all branches of a parallel circuit are the same, and are equal to the voltage at the source. Vs = Va = Vb = Vc • The total current (IT) (amperage) is equal to the sum of the currents flowing through each of the branches. IT = Ia + Ib = Ic Ohm’s Law R1 12V Ω • R2 12V Ω R3 12V Ω The total resistance in a parallel circuit is the reciprocal of the sum of the reciprocals of the separate resistances in parallel. Resistance: ___ + ___ + ___ 1 1 1 Reciprocal: • 1 + 1 + 1_ Ohm’s law applies equally well to the total circuit or any of the loops or branches. E=I • R • A break or opening in any branch of a parallel circuit does not stop the flow of electrons to the remaining branches.