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Consider a wire of radius 3.00 cm and carrying a current of 5 A out of the plane of the paper. By means of the Ampères law,

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I 25 A .5um Meomding to Amperes kau X o. 2Ir 4n R2 2 x 2 x5 x 1 5x 10 lo 3x 3 x 10 5 Tesla

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