Back to Parallel Circuits — Problem 5 · Task Set 10

Exercises: Parallel Circuits

Work through each section in order. Show all steps: find R_eq, then branch currents, then verify with KCL.

Grade 11·21 problems·~30 min·OpenStax Physics (High School)·section·sec-19-3

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Fluency Practice

Using the same parallel circuit ( $R_1 = 20\ \Omega$ , $R_2 = 30\ \Omega$ , $R_3 = 60\ \Omega$ , $V = 12\ \text{V}$ ), the branch currents are $I_1 = 0.60\ \text{A}$ , $I_2 = 0.40\ \text{A}$ , $I_3 = 0.20\ \text{A}$ . What is the total current from the source?

$1.20\ \text{A}$ — the sum of all branch currents.

$0.40\ \text{A}$ — the average of the three branch currents.

$0.20\ \text{A}$ — the current through the smallest branch.

$0.60\ \text{A}$ — the current through the largest branch.