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AP Physics 2
11.6 Kirchhoff’s Loop Rule
11.5 Compound Direct Current (DC) Circuits
11.2 Simple Circuits
IntermediateMCQConceptual25.1k
A schematic diagram of a DC circuit. On the left vertical wire is an ideal battery labeled with potential difference \varepsilon. Three parallel vertical branches extend between the main top and bottom conductors. Each branch contains a lightbulb symbol, labeled Bulb 1, Bulb 2, and Bulb 3 from left to right. No other circuit elements or labels appear.
Three identical lightbulbs connected in parallel across an ideal battery.
Three identical lightbulbs are connected in parallel across an ideal battery of potential difference \(\varepsilon\). Bulb 1 suddenly burns out, causing its branch to become an open circuit. Which of the following predictions correctly describes the current through Bulb 2 and provides the correct justification?

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