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Worked Series-Parallel DC Circuit: 120 V Source

A 120 V DC source with a 10 Ω series resistor feeding 20 Ω and 30 Ω parallel resistors, solved step by step: 12 Ω parallel equivalent, 22 Ω total, 5.455 A source current, 3.273 A and 2.182 A branch currents, and the voltage across each part.

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