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The circuit shown in the figure below contains two batteries, each with an emf and an internal resistance, and two resistors. (R₁ = 3.5 Ω, R₂ = 9.0 Ω, R₃ = 1.7 Ω, V = 16.0 V.)

1147_The figure contains two batteries.png

(a) Find the current in the circuit (magnitude and direction).

(b) Find the terminal voltage V_ab of the 16.0 V battery.

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