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11 August, 07:22

Five long parallel wires in an xy plane are separated by distance d = 40.0 cm. The currents into the page are i1 = 2.00 A, i3 = 0.15 A, i4 = 3.00 A and i5 = 1.50 A; the current out of the page is i2 = 5.00 A. What is the magnitude of the net force per unit length acting on wire 3 due to the currents in the other wires?

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  1. 11 August, 07:34
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    The answer is = 5.81*10-7 N/m

    Explanation:

    From the above question, the first step to take is to find the magnitude of the net force per unit length acting on wire 3 due to the currents in the other wires

    Solution

    Given

    The magnitude of the net force per unit length moving on wire 3 due to the currents in the other wires is

    = I₃ * B

    = I₃*[-μ₀I₁ / (2π*2d) + μ₋₀I₂ / (2πd) + μ₀I₄ / (2πd) + μ₀I₅ / (2π*2d) ] (+y direction)

    Thus,

    = μ₀I₃ / (2πd) * (-I₁/2 + I₁ + I₄ + I₅/2)

    Therefore, the magnitude of the net force per unit length acting on wire 3 due to the currents in the other wires is = 5.81*10-7 N/m
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