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A 4 x 10 cm rectangular loop of wire is situated on the x-y plane with...

A 4 x 10 cm rectangular loop of wire is situated on the x-y plane with its corners located at coordinates (0, 0), (10,0), (10, 4) and (4,0) respectively. The loop has a current of 30 A flowing in the counter-clockwise direction. Determine the magnetic field at the centre of the loop.

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