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AP Physics 2
11.6 Kirchhoff’s Loop Rule
11.4 Electric Power
AdvancedMCQMathematicalConceptual20k
A single rectangular circuit loop with horizontal top and bottom segments and vertical left and right segments. The left vertical segment contains an ideal battery labeled \(\varepsilon_1 = 24\text{ V}\), oriented with its longer horizontal plate at the top and shorter thicker plate below it. The top horizontal segment contains a resistor labeled \(R_1 = 3.0\text{ }\Omega\). The right vertical segment contains an ideal battery labeled \(\varepsilon_2 = 8.0\text{ V}\) with its longer horizontal plate at the top and shorter thicker plate below it, and directly below this battery on the same right wire is a resistor labeled \(R_2 = 4.0\text{ }\Omega\). The bottom horizontal segment contains a resistor labeled \(R_3 = 1.0\text{ }\Omega\). No other labels, lines, text, or circuit components appear.
A single-loop circuit containing two opposing batteries and three resistors.
A circuit is constructed from two ideal batteries and three resistors, as shown in the diagram. Battery 1 has an electromotive force (emf) \(\varepsilon_1 = 24\text{ V}\), and battery 2 has an emf \(\varepsilon_2 = 8.0\text{ V}\). The resistors have resistances \(R_1 = 3.0\text{ }\Omega\), \(R_2 = 4.0\text{ }\Omega\), and \(R_3 = 1.0\text{ }\Omega\). What is the total rate at which electrical energy is converted into other forms of energy in the branch containing battery 2 and resistor \(R_2\)?

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