Use mesh analysis in the circuit of Figure P3.7 to find Va. Let R1 = 12?, R2 = 6?, R3 = 10 ?, V1 = 4V, V2 = 1V.


I1 & I2 as shown in this diagram are branch currents, not mesh currents. Use iA & iB (to avoid confusion with I1 & I2) as the mesh currents for the left hand pane and the right hand pane, respectively. Assume that both mesh currents are clockwise.



Known quantities:

Circuit shown in Figure P3.7 with known source voltages and resistances,





Find:



The voltage Va.



Analysis:

Using the mesh current analysis:

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