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Two concentric current loops lie in the same plane. The smaller loop has a radius of...

Two concentric current loops lie in the same plane. The smaller loop has a radius of 2.3 cm and a current of 12 A. The bigger loop has a current of 20 A . The magnetic field at the center of the loops is found to be zero. You may want to review (Pages 774 - 775) . Part A What is the radius of the bigger loop? Express your answer to two significant figures and include the appropriate units. R R = nothing nothing

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