Magnetism157(c) At point P, 201212122netIIBBBrrµπ= −+=−+()7410T m A5.00 A5.00 A20.300 m0.200 mT out of pagenetBπµ−×⋅1.67π=−+=19.39The distance from each wire to point Pis given by ()()2210.200 m0.200 m0.141 m2r=+=At point P, the magnitude of the magnetic field produced by each of the wires is ()()()70410TmA5.00 A220.141 mIBrπµ7.07 Tµππ−×⋅==()=Carrying currents into the page, the field Aproduces at Pis directed to the left and down at –135°, while Bcreates a field to the right and down at – 45°. Carrying currents toward you, Cproduces a field downward and to the right at – 45°, while D’s contribution is downward and to the left. The horizontal components of these equal magnitude contributions cancel in
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