The figure shows, in cross section, several conductors that carry currents through the plane of the figure. The currents have the magnitudes I1= 4.0 A, I2= 6.5 A, and I3= 1.9 A, and the directions shown. Four paths, labeled a through d, are shown. (Figure 1)
Part A
What is the line integral ∮B⃗⋅dl⃗ for the path a? The integral involves going around the path in the counterclockwise direction.
Part B
What is the line integral ∮B⃗⋅dl⃗ for the path b? The integral involves going around the path in the counterclockwise direction.
Part C
What is the line integral ∮B⃗⋅dl⃗ for the path c? The integral involves going around the path in the counterclockwise direction.
Part D
What is the line integral ∮B⃗⋅dl⃗ for the path d? The integral involves going around the path in the counterclockwise direction.
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