Chapter 3
Exercise 14:
Hint:
Establish three meshes, labeled 1 through 3 starting at left mesh and progressing clockwise.
The first mesh equation would be 90 I₁ - 20 I₂ - 20 I₃ = 12.

Ans:
1.09 V

Exercise S3.1b:
Hint:
By inspection, left mesh current I₁ is 2 A.
The right mesh equation is 6 I_x - 4 I₁ = 10.

Ans:
3 A

Exercise S3.2b:
Hint:
By inspection, left mesh current I₁ is 6 A.
By inspection, right mesh current I₃ is - 3 A.
The center mesh equation is 9 I₂ - 3 I₁ - 6 I₃ = 18.

Solve for I₂ and find the voltage difference across either of the center branches.

Ans:
30 V