The electrical circuit shown consists of resistors and voltage sources. Determine i1, i2, i3, i4 and i5, using the mesh current method based on Kirchhoff's voltage law (see Sample Problem 3-4).
V1, = 40V, V2 = 30V, V3 = 36V,
R1 = 160, R2 = 200, R3 = 100
R4 = 140, R5 = 8 Q, R6 = 16 Q,
R1 = 10 Q, R8 = 15 0, R9 = 6 0,
R10 = 4 Q.

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