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A circuit is constructed with five resistors and one real battery as shown above right. We model. The real battery

as an ideal emf V = 12 V in series with an internal resistance r as shown above left. The values for the resistors are: R1 = R3 = 31 Ω, R4 = R5 = 68 Ω and R2 = 119 Ω. The measured voltage across the terminals of the battery is Vbattery = 11.44 V.

Capture 1.PNG

What is the value of I3?

Capture 1.PNG

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