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AP Physics 2
11.5 Compound Direct Current (DC) Circuits
BeginnerMCQMathematical24.5k
A schematic diagram of a closed rectangular DC circuit. The left vertical segment contains an ideal battery labeled \(12 \text{ V}\), with its positive terminal at the top. The top horizontal wire contains light bulb 1 with resistance \(R_1 = 3 \text{ }\Omega\). To the right of light bulb 1, the wire splits at a junction into two parallel vertical branches. The left parallel branch contains light bulb 2 with resistance \(R_2 = 6 \text{ }\Omega\). The right parallel branch contains light bulb 3 with resistance \(R_3 = 6 \text{ }\Omega\). The two parallel branches recombine at a bottom junction into a single bottom horizontal wire that returns to the negative terminal of the battery. An arrow labeled \(I_{\text{total}}\) on the bottom wire points to the left. No other labels, lines, text, or components appear.
DC circuit with three bulbs.
A 12 V ideal battery is connected in a circuit with three light bulbs, as shown in the diagram. Bulb 1 has a resistance of \(3 \text{ }\Omega\), while Bulb 2 and Bulb 3 each have a resistance of \(6 \text{ }\Omega\). What is the total current \(I_{\text{total}}\)

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