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Magnetic field produced by two parallel current-carrying wires – problems and solutions

1. Two long parallel wires carrying the same currents, 3-A. If the distance between both wires is 40 cm, determine the magnetic field at point P. μo = 4π x 10−7 Wb A−1 m−1.

Known :Magnetic field produced by two parallel current-carrying wires - problems and solutions 1

Electric current (I) = 3-A

Distance between wire 1 and 2 (r12) = 40 cm = 0.4 m

Distance between wire 1 and P (r1P) = 30 cm = 0.3 m

Distance between wire 2 and P (r2P) = 40 – 30 = 10 cm = 0.1 m

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