A square loop of wire having an edge length L = 5cm lies in the xy plane and carries a current I = 20A in %3D the direction indicated in the figure. The loop is then subjected to a magnetic field B = (2î – 3ĵ + 4k)T. %3D Find the torque (7) (about the central axis PP') acting on the loop at the instant the magnetic field is applied.
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