As Shown in the Figure,two Long Straight Wires Are Separated

question 12

Short Answer

As shown in the figure,two long straight wires are separated by a distance of d = 0.80 m.The currents are I₁ = 2.0 A to the right in the upper wire and I₂ = 7.0 A to the left in the lower wire.What are the magnitude and direction of the magnetic field at point P,which is a distance d/2 = 0.40 m below the lower wire? (μ₀ = 4π × 10^-7 T • m/A)

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