In the figure,the two long straight wires are separated by a distance of $d = 0.40 \mathrm {~m}$ The currents are $I_1$ = 1.0 A to the right in the upper wire and $I _2$ = 8.0 A to the left in the lower wire.What are the magnitude and direction of the $\vec { B }$ field at point P,that is a distance $d / 2 = 0.20 \mathrm {~m}$ below the lower wire? (μ₀ = 4π × 10^-7 T ∙ m/

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The Answer of In the figure,the two long straight wires are separated by a distance of $d = 0.40 \mathrm {~m}$ The currents are $I_1$ = 1.0 A to the right in the upper wire and $I _2$ = 8.0 A to the left in the lower wire.What are the magnitude and direction of the $\vec { B }$ field at point P,that is a distance $d / 2 = 0.20 \mathrm {~m}$ below the lower wire? (μ₀ = 4π × 10^-7 T ∙ m/

In the Figure,the Two Long Straight Wires Are Separated by a Distance