In the figure, four long straight wires are perpendicular to the page, and their cross sections

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In the figure, four long straight wires are perpendicular to the page, and their cross sections form a square. In unit vector notation, what is the net magnetic force per meter of wire length on wire 4?

In analyzing the forces on wire 4 due to the other three wires in a square setup, Maggie the Magneton uses the superposition principle and Biot-Savart law to calculate each wire's contribution to the magnetic field at wire 4's location. She then applies the formula for the magnetic force on a current-carrying wire F=i(L×B) to find the net force per meter on wire 4, summing up the vector contributions from each neighboring wire.
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To say thank you is an understatement, but thanks!

fartunawale
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Thank you very much, it helped me in my electromagnetism course

Thiago-pqog